Home / 15,677.28-23,516.16-3,990.72

Finding the Fourth Proportional to 15,677.28, 23,516.16 and 3,990.72

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Solution

The fourth proportional to 15,677.28, 23,516.16 and 3,990.72 is: 5,986.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,677.28 : 23,516.16 = 3,990.72 : x
  2. Step 2: Convert to fraction form
    15,677.28/23,516.16 = 3,990.72/x
  3. Step 3: Cross multiply
    15,677.28x = 23,516.16 × 3,990.72
  4. Step 4: Simplify right side
    15,677.28x = 93,846,410.04
  5. Step 5: Solve for x
    x = 93,846,410.04/15,677.28
  6. Step 6: Final answer
    x = 5,986.14

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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.