Home / 12,934.80-19,373.40-9,997.20

Finding the Fourth Proportional to 12,934.80, 19,373.40 and 9,997.20

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Solution

The fourth proportional to 12,934.80, 19,373.40 and 9,997.20 is: 14,973.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,934.80 : 19,373.40 = 9,997.20 : x
  2. Step 2: Convert to fraction form
    12,934.80/19,373.40 = 9,997.20/x
  3. Step 3: Cross multiply
    12,934.80x = 19,373.40 × 9,997.20
  4. Step 4: Simplify right side
    12,934.80x = 193,679,754.48
  5. Step 5: Solve for x
    x = 193,679,754.48/12,934.80
  6. Step 6: Final answer
    x = 14,973.54

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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.