Home / 28,288.24-42,432.72-11,421.58

Finding the Fourth Proportional to 28,288.24, 42,432.72 and 11,421.58

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Solution

The fourth proportional to 28,288.24, 42,432.72 and 11,421.58 is: 17,132.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,288.24 : 42,432.72 = 11,421.58 : x
  2. Step 2: Convert to fraction form
    28,288.24/42,432.72 = 11,421.58/x
  3. Step 3: Cross multiply
    28,288.24x = 42,432.72 × 11,421.58
  4. Step 4: Simplify right side
    28,288.24x = 484,648,706.10
  5. Step 5: Solve for x
    x = 484,648,706.10/28,288.24
  6. Step 6: Final answer
    x = 17,132.52

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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.