Home / 20,911.20-31,366.85-14,699.01

Finding the Fourth Proportional to 20,911.20, 31,366.85 and 14,699.01

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Solution

The fourth proportional to 20,911.20, 31,366.85 and 14,699.01 is: 22,048.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,911.20 : 31,366.85 = 14,699.01 : x
  2. Step 2: Convert to fraction form
    20,911.20/31,366.85 = 14,699.01/x
  3. Step 3: Cross multiply
    20,911.20x = 31,366.85 × 14,699.01
  4. Step 4: Simplify right side
    20,911.20x = 461,061,597.73
  5. Step 5: Solve for x
    x = 461,061,597.73/20,911.20
  6. Step 6: Final answer
    x = 22,048.55

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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.