Home / 20,964.48-28,937.13-12,472.56

Finding the Fourth Proportional to 20,964.48, 28,937.13 and 12,472.56

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Solution

The fourth proportional to 20,964.48, 28,937.13 and 12,472.56 is: 17,215.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,964.48 : 28,937.13 = 12,472.56 : x
  2. Step 2: Convert to fraction form
    20,964.48/28,937.13 = 12,472.56/x
  3. Step 3: Cross multiply
    20,964.48x = 28,937.13 × 12,472.56
  4. Step 4: Simplify right side
    20,964.48x = 360,920,090.15
  5. Step 5: Solve for x
    x = 360,920,090.15/20,964.48
  6. Step 6: Final answer
    x = 17,215.79

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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.