Home / 20,760.40-31,152.91-19,446.91

Finding the Fourth Proportional to 20,760.40, 31,152.91 and 19,446.91

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Solution

The fourth proportional to 20,760.40, 31,152.91 and 19,446.91 is: 29,181.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,760.40 : 31,152.91 = 19,446.91 : x
  2. Step 2: Convert to fraction form
    20,760.40/31,152.91 = 19,446.91/x
  3. Step 3: Cross multiply
    20,760.40x = 31,152.91 × 19,446.91
  4. Step 4: Simplify right side
    20,760.40x = 605,827,837.01
  5. Step 5: Solve for x
    x = 605,827,837.01/20,760.40
  6. Step 6: Final answer
    x = 29,181.90

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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.