Home / 23,318.40-34,982.10-9,991.20

Finding the Fourth Proportional to 23,318.40, 34,982.10 and 9,991.20

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Solution

The fourth proportional to 23,318.40, 34,982.10 and 9,991.20 is: 14,988.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,318.40 : 34,982.10 = 9,991.20 : x
  2. Step 2: Convert to fraction form
    23,318.40/34,982.10 = 9,991.20/x
  3. Step 3: Cross multiply
    23,318.40x = 34,982.10 × 9,991.20
  4. Step 4: Simplify right side
    23,318.40x = 349,513,157.52
  5. Step 5: Solve for x
    x = 349,513,157.52/23,318.40
  6. Step 6: Final answer
    x = 14,988.73

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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.