Home / 28,287.52-42,432.36-7,511.20

Finding the Fourth Proportional to 28,287.52, 42,432.36 and 7,511.20

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Solution

The fourth proportional to 28,287.52, 42,432.36 and 7,511.20 is: 11,267.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,287.52 : 42,432.36 = 7,511.20 : x
  2. Step 2: Convert to fraction form
    28,287.52/42,432.36 = 7,511.20/x
  3. Step 3: Cross multiply
    28,287.52x = 42,432.36 × 7,511.20
  4. Step 4: Simplify right side
    28,287.52x = 318,717,942.43
  5. Step 5: Solve for x
    x = 318,717,942.43/28,287.52
  6. Step 6: Final answer
    x = 11,267.09

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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.