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Finding the Fourth Proportional to 15,158.49, 20,917.65 and 8,352.23

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Solution

The fourth proportional to 15,158.49, 20,917.65 and 8,352.23 is: 11,525.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,158.49 : 20,917.65 = 8,352.23 : x
  2. Step 2: Convert to fraction form
    15,158.49/20,917.65 = 8,352.23/x
  3. Step 3: Cross multiply
    15,158.49x = 20,917.65 × 8,352.23
  4. Step 4: Simplify right side
    15,158.49x = 174,708,919.27
  5. Step 5: Solve for x
    x = 174,708,919.27/15,158.49
  6. Step 6: Final answer
    x = 11,525.48

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Double scale
Find fourth proportional to 15,159.49, 20,919.03 and 8,353.23
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.