Home / 28,116.96-38,800.20-16,172.16

Finding the Fourth Proportional to 28,116.96, 38,800.20 and 16,172.16

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Solution

The fourth proportional to 28,116.96, 38,800.20 and 16,172.16 is: 22,316.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,116.96 : 38,800.20 = 16,172.16 : x
  2. Step 2: Convert to fraction form
    28,116.96/38,800.20 = 16,172.16/x
  3. Step 3: Cross multiply
    28,116.96x = 38,800.20 × 16,172.16
  4. Step 4: Simplify right side
    28,116.96x = 627,483,042.43
  5. Step 5: Solve for x
    x = 627,483,042.43/28,116.96
  6. Step 6: Final answer
    x = 22,316.89

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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.