Home / 28,812.90-39,765.21-16,068.15

Finding the Fourth Proportional to 28,812.90, 39,765.21 and 16,068.15

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Solution

The fourth proportional to 28,812.90, 39,765.21 and 16,068.15 is: 22,175.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,812.90 : 39,765.21 = 16,068.15 : x
  2. Step 2: Convert to fraction form
    28,812.90/39,765.21 = 16,068.15/x
  3. Step 3: Cross multiply
    28,812.90x = 39,765.21 × 16,068.15
  4. Step 4: Simplify right side
    28,812.90x = 638,953,359.06
  5. Step 5: Solve for x
    x = 638,953,359.06/28,812.90
  6. Step 6: Final answer
    x = 22,175.95

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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.