Home / 20,545.36-30,801.90-8,689.43

Finding the Fourth Proportional to 20,545.36, 30,801.90 and 8,689.43

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Solution

The fourth proportional to 20,545.36, 30,801.90 and 8,689.43 is: 13,027.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,545.36 : 30,801.90 = 8,689.43 : x
  2. Step 2: Convert to fraction form
    20,545.36/30,801.90 = 8,689.43/x
  3. Step 3: Cross multiply
    20,545.36x = 30,801.90 × 8,689.43
  4. Step 4: Simplify right side
    20,545.36x = 267,650,953.92
  5. Step 5: Solve for x
    x = 267,650,953.92/20,545.36
  6. Step 6: Final answer
    x = 13,027.32

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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.