Home / 10,521.20-15,781.18-3,946.83

Finding the Fourth Proportional to 10,521.20, 15,781.18 and 3,946.83

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Solution

The fourth proportional to 10,521.20, 15,781.18 and 3,946.83 is: 5,920.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,521.20 : 15,781.18 = 3,946.83 : x
  2. Step 2: Convert to fraction form
    10,521.20/15,781.18 = 3,946.83/x
  3. Step 3: Cross multiply
    10,521.20x = 15,781.18 × 3,946.83
  4. Step 4: Simplify right side
    10,521.20x = 62,285,664.25
  5. Step 5: Solve for x
    x = 62,285,664.25/10,521.20
  6. Step 6: Final answer
    x = 5,920.02

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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.