Home / 10,135.17-14,024.88-8,640.72

Finding the Fourth Proportional to 10,135.17, 14,024.88 and 8,640.72

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Solution

The fourth proportional to 10,135.17, 14,024.88 and 8,640.72 is: 11,956.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,135.17 : 14,024.88 = 8,640.72 : x
  2. Step 2: Convert to fraction form
    10,135.17/14,024.88 = 8,640.72/x
  3. Step 3: Cross multiply
    10,135.17x = 14,024.88 × 8,640.72
  4. Step 4: Simplify right side
    10,135.17x = 121,185,061.11
  5. Step 5: Solve for x
    x = 121,185,061.11/10,135.17
  6. Step 6: Final answer
    x = 11,956.88

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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.