Home / 10,213.67-15,312.72-5,280.17

Finding the Fourth Proportional to 10,213.67, 15,312.72 and 5,280.17

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Solution

The fourth proportional to 10,213.67, 15,312.72 and 5,280.17 is: 7,916.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,213.67 : 15,312.72 = 5,280.17 : x
  2. Step 2: Convert to fraction form
    10,213.67/15,312.72 = 5,280.17/x
  3. Step 3: Cross multiply
    10,213.67x = 15,312.72 × 5,280.17
  4. Step 4: Simplify right side
    10,213.67x = 80,853,688.20
  5. Step 5: Solve for x
    x = 80,853,688.20/10,213.67
  6. Step 6: Final answer
    x = 7,916.22

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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.