Home / 13,614.75-20,407.55-5,715.29

Finding the Fourth Proportional to 13,614.75, 20,407.55 and 5,715.29

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Solution

The fourth proportional to 13,614.75, 20,407.55 and 5,715.29 is: 8,566.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,614.75 : 20,407.55 = 5,715.29 : x
  2. Step 2: Convert to fraction form
    13,614.75/20,407.55 = 5,715.29/x
  3. Step 3: Cross multiply
    13,614.75x = 20,407.55 × 5,715.29
  4. Step 4: Simplify right side
    13,614.75x = 116,635,088.88
  5. Step 5: Solve for x
    x = 116,635,088.88/13,614.75
  6. Step 6: Final answer
    x = 8,566.82

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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.