Home / 28,966.25-39,970.04-16,220.13

Finding the Fourth Proportional to 28,966.25, 39,970.04 and 16,220.13

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Solution

The fourth proportional to 28,966.25, 39,970.04 and 16,220.13 is: 22,381.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,966.25 : 39,970.04 = 16,220.13 : x
  2. Step 2: Convert to fraction form
    28,966.25/39,970.04 = 16,220.13/x
  3. Step 3: Cross multiply
    28,966.25x = 39,970.04 × 16,220.13
  4. Step 4: Simplify right side
    28,966.25x = 648,319,163.80
  5. Step 5: Solve for x
    x = 648,319,163.80/28,966.25
  6. Step 6: Final answer
    x = 22,381.88

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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.