Home / 10,521.87-15,785.23-3,126.16

Finding the Fourth Proportional to 10,521.87, 15,785.23 and 3,126.16

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Solution

The fourth proportional to 10,521.87, 15,785.23 and 3,126.16 is: 4,689.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,521.87 : 15,785.23 = 3,126.16 : x
  2. Step 2: Convert to fraction form
    10,521.87/15,785.23 = 3,126.16/x
  3. Step 3: Cross multiply
    10,521.87x = 15,785.23 × 3,126.16
  4. Step 4: Simplify right side
    10,521.87x = 49,347,154.62
  5. Step 5: Solve for x
    x = 49,347,154.62/10,521.87
  6. Step 6: Final answer
    x = 4,689.96

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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.