Home / 19,400.40-29,077.86-8,990.28

Finding the Fourth Proportional to 19,400.40, 29,077.86 and 8,990.28

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Solution

The fourth proportional to 19,400.40, 29,077.86 and 8,990.28 is: 13,474.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,400.40 : 29,077.86 = 8,990.28 : x
  2. Step 2: Convert to fraction form
    19,400.40/29,077.86 = 8,990.28/x
  3. Step 3: Cross multiply
    19,400.40x = 29,077.86 × 8,990.28
  4. Step 4: Simplify right side
    19,400.40x = 261,418,103.20
  5. Step 5: Solve for x
    x = 261,418,103.20/19,400.40
  6. Step 6: Final answer
    x = 13,474.88

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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.