Home / 20,587.42-30,890.13-8,908.30

Finding the Fourth Proportional to 20,587.42, 30,890.13 and 8,908.30

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Solution

The fourth proportional to 20,587.42, 30,890.13 and 8,908.30 is: 13,366.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,587.42 : 30,890.13 = 8,908.30 : x
  2. Step 2: Convert to fraction form
    20,587.42/30,890.13 = 8,908.30/x
  3. Step 3: Cross multiply
    20,587.42x = 30,890.13 × 8,908.30
  4. Step 4: Simplify right side
    20,587.42x = 275,178,545.08
  5. Step 5: Solve for x
    x = 275,178,545.08/20,587.42
  6. Step 6: Final answer
    x = 13,366.34

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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.