Home / 20,910.08-31,363.68-9,801.20

Finding the Fourth Proportional to 20,910.08, 31,363.68 and 9,801.20

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Solution

The fourth proportional to 20,910.08, 31,363.68 and 9,801.20 is: 14,701.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,910.08 : 31,363.68 = 9,801.20 : x
  2. Step 2: Convert to fraction form
    20,910.08/31,363.68 = 9,801.20/x
  3. Step 3: Cross multiply
    20,910.08x = 31,363.68 × 9,801.20
  4. Step 4: Simplify right side
    20,910.08x = 307,401,700.42
  5. Step 5: Solve for x
    x = 307,401,700.42/20,910.08
  6. Step 6: Final answer
    x = 14,701.13

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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.