Home / 23,428.40-32,331.27-12,818

Finding the Fourth Proportional to 23,428.40, 32,331.27 and 12,818

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Solution

The fourth proportional to 23,428.40, 32,331.27 and 12,818 is: 17,688.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,428.40 : 32,331.27 = 12,818 : x
  2. Step 2: Convert to fraction form
    23,428.40/32,331.27 = 12,818/x
  3. Step 3: Cross multiply
    23,428.40x = 32,331.27 × 12,818
  4. Step 4: Simplify right side
    23,428.40x = 414,422,218.86
  5. Step 5: Solve for x
    x = 414,422,218.86/23,428.40
  6. Step 6: Final answer
    x = 17,688.88

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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.