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Finding the Fourth Proportional to 12,673.12, 17,490 and 10,308.64

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Solution

The fourth proportional to 12,673.12, 17,490 and 10,308.64 is: 14,226.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,673.12 : 17,490 = 10,308.64 : x
  2. Step 2: Convert to fraction form
    12,673.12/17,490 = 10,308.64/x
  3. Step 3: Cross multiply
    12,673.12x = 17,490 × 10,308.64
  4. Step 4: Simplify right side
    12,673.12x = 180,298,113.60
  5. Step 5: Solve for x
    x = 180,298,113.60/12,673.12
  6. Step 6: Final answer
    x = 14,226.81

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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.