Home / 28,358.10-39,135.08-15,612.62

Finding the Fourth Proportional to 28,358.10, 39,135.08 and 15,612.62

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Solution

The fourth proportional to 28,358.10, 39,135.08 and 15,612.62 is: 21,545.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,358.10 : 39,135.08 = 15,612.62 : x
  2. Step 2: Convert to fraction form
    28,358.10/39,135.08 = 15,612.62/x
  3. Step 3: Cross multiply
    28,358.10x = 39,135.08 × 15,612.62
  4. Step 4: Simplify right side
    28,358.10x = 611,000,976.07
  5. Step 5: Solve for x
    x = 611,000,976.07/28,358.10
  6. Step 6: Final answer
    x = 21,545.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.