Home / 21,999.52-30,358.96-12,439.25

Finding the Fourth Proportional to 21,999.52, 30,358.96 and 12,439.25

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Solution

The fourth proportional to 21,999.52, 30,358.96 and 12,439.25 is: 17,165.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,999.52 : 30,358.96 = 12,439.25 : x
  2. Step 2: Convert to fraction form
    21,999.52/30,358.96 = 12,439.25/x
  3. Step 3: Cross multiply
    21,999.52x = 30,358.96 × 12,439.25
  4. Step 4: Simplify right side
    21,999.52x = 377,642,693.18
  5. Step 5: Solve for x
    x = 377,642,693.18/21,999.52
  6. Step 6: Final answer
    x = 17,165.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.