Home / 20,577.61-28,397.21-11,146.17

Finding the Fourth Proportional to 20,577.61, 28,397.21 and 11,146.17

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Solution

The fourth proportional to 20,577.61, 28,397.21 and 11,146.17 is: 15,381.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,577.61 : 28,397.21 = 11,146.17 : x
  2. Step 2: Convert to fraction form
    20,577.61/28,397.21 = 11,146.17/x
  3. Step 3: Cross multiply
    20,577.61x = 28,397.21 × 11,146.17
  4. Step 4: Simplify right side
    20,577.61x = 316,520,130.19
  5. Step 5: Solve for x
    x = 316,520,130.19/20,577.61
  6. Step 6: Final answer
    x = 15,381.77

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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.