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Finding the Fourth Proportional to 39,507.71, 59,254.92 and 13,212.41

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Solution

The fourth proportional to 39,507.71, 59,254.92 and 13,212.41 is: 19,816.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,507.71 : 59,254.92 = 13,212.41 : x
  2. Step 2: Convert to fraction form
    39,507.71/59,254.92 = 13,212.41/x
  3. Step 3: Cross multiply
    39,507.71x = 59,254.92 × 13,212.41
  4. Step 4: Simplify right side
    39,507.71x = 782,900,001.28
  5. Step 5: Solve for x
    x = 782,900,001.28/39,507.71
  6. Step 6: Final answer
    x = 19,816.39

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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.