Home / 13,635.28-20,457.24-4,870

Finding the Fourth Proportional to 13,635.28, 20,457.24 and 4,870

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Solution

The fourth proportional to 13,635.28, 20,457.24 and 4,870 is: 7,306.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,635.28 : 20,457.24 = 4,870 : x
  2. Step 2: Convert to fraction form
    13,635.28/20,457.24 = 4,870/x
  3. Step 3: Cross multiply
    13,635.28x = 20,457.24 × 4,870
  4. Step 4: Simplify right side
    13,635.28x = 99,626,758.80
  5. Step 5: Solve for x
    x = 99,626,758.80/13,635.28
  6. Step 6: Final answer
    x = 7,306.54

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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.