Home / 10,117.56-15,132.78-7,312.44

Finding the Fourth Proportional to 10,117.56, 15,132.78 and 7,312.44

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Solution

The fourth proportional to 10,117.56, 15,132.78 and 7,312.44 is: 10,937.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,117.56 : 15,132.78 = 7,312.44 : x
  2. Step 2: Convert to fraction form
    10,117.56/15,132.78 = 7,312.44/x
  3. Step 3: Cross multiply
    10,117.56x = 15,132.78 × 7,312.44
  4. Step 4: Simplify right side
    10,117.56x = 110,657,545.78
  5. Step 5: Solve for x
    x = 110,657,545.78/10,117.56
  6. Step 6: Final answer
    x = 10,937.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.