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Finding the Fourth Proportional to 14,595.79, 20,142.35 and 8,308.21

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Solution

The fourth proportional to 14,595.79, 20,142.35 and 8,308.21 is: 11,465.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,595.79 : 20,142.35 = 8,308.21 : x
  2. Step 2: Convert to fraction form
    14,595.79/20,142.35 = 8,308.21/x
  3. Step 3: Cross multiply
    14,595.79x = 20,142.35 × 8,308.21
  4. Step 4: Simplify right side
    14,595.79x = 167,346,873.69
  5. Step 5: Solve for x
    x = 167,346,873.69/14,595.79
  6. Step 6: Final answer
    x = 11,465.42

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Half scale
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Double scale
Find fourth proportional to 14,596.79, 20,143.73 and 8,309.21
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.