Home / 23,115.43-31,869.88-15,545.67

Finding the Fourth Proportional to 23,115.43, 31,869.88 and 15,545.67

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Solution

The fourth proportional to 23,115.43, 31,869.88 and 15,545.67 is: 21,433.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,115.43 : 31,869.88 = 15,545.67 : x
  2. Step 2: Convert to fraction form
    23,115.43/31,869.88 = 15,545.67/x
  3. Step 3: Cross multiply
    23,115.43x = 31,869.88 × 15,545.67
  4. Step 4: Simplify right side
    23,115.43x = 495,438,637.42
  5. Step 5: Solve for x
    x = 495,438,637.42/23,115.43
  6. Step 6: Final answer
    x = 21,433.24

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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.