Home / 28,520.99-42,763.25-13,700.42

Finding the Fourth Proportional to 28,520.99, 42,763.25 and 13,700.42

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Solution

The fourth proportional to 28,520.99, 42,763.25 and 13,700.42 is: 20,541.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,520.99 : 42,763.25 = 13,700.42 : x
  2. Step 2: Convert to fraction form
    28,520.99/42,763.25 = 13,700.42/x
  3. Step 3: Cross multiply
    28,520.99x = 42,763.25 × 13,700.42
  4. Step 4: Simplify right side
    28,520.99x = 585,874,306.00
  5. Step 5: Solve for x
    x = 585,874,306.00/28,520.99
  6. Step 6: Final answer
    x = 20,541.87

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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.