Home / 21,060.62-31,533.92-13,144.20

Finding the Fourth Proportional to 21,060.62, 31,533.92 and 13,144.20

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Solution

The fourth proportional to 21,060.62, 31,533.92 and 13,144.20 is: 19,680.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,060.62 : 31,533.92 = 13,144.20 : x
  2. Step 2: Convert to fraction form
    21,060.62/31,533.92 = 13,144.20/x
  3. Step 3: Cross multiply
    21,060.62x = 31,533.92 × 13,144.20
  4. Step 4: Simplify right side
    21,060.62x = 414,488,151.26
  5. Step 5: Solve for x
    x = 414,488,151.26/21,060.62
  6. Step 6: Final answer
    x = 19,680.72

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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.