Home / 28,275.39-42,429.42-15,135.12

Finding the Fourth Proportional to 28,275.39, 42,429.42 and 15,135.12

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Solution

The fourth proportional to 28,275.39, 42,429.42 and 15,135.12 is: 22,711.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,275.39 : 42,429.42 = 15,135.12 : x
  2. Step 2: Convert to fraction form
    28,275.39/42,429.42 = 15,135.12/x
  3. Step 3: Cross multiply
    28,275.39x = 42,429.42 × 15,135.12
  4. Step 4: Simplify right side
    28,275.39x = 642,174,363.23
  5. Step 5: Solve for x
    x = 642,174,363.23/28,275.39
  6. Step 6: Final answer
    x = 22,711.42

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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.