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Finding the Fourth Proportional to 35,539, 53,308.78 and 12,165.64

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Solution

The fourth proportional to 35,539, 53,308.78 and 12,165.64 is: 18,248.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,539 : 53,308.78 = 12,165.64 : x
  2. Step 2: Convert to fraction form
    35,539/53,308.78 = 12,165.64/x
  3. Step 3: Cross multiply
    35,539x = 53,308.78 × 12,165.64
  4. Step 4: Simplify right side
    35,539x = 648,535,426.32
  5. Step 5: Solve for x
    x = 648,535,426.32/35,539
  6. Step 6: Final answer
    x = 18,248.56

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.