Home / 28,203.30-42,298.20-16,331.40

Finding the Fourth Proportional to 28,203.30, 42,298.20 and 16,331.40

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Solution

The fourth proportional to 28,203.30, 42,298.20 and 16,331.40 is: 24,493.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,203.30 : 42,298.20 = 16,331.40 : x
  2. Step 2: Convert to fraction form
    28,203.30/42,298.20 = 16,331.40/x
  3. Step 3: Cross multiply
    28,203.30x = 42,298.20 × 16,331.40
  4. Step 4: Simplify right side
    28,203.30x = 690,788,823.48
  5. Step 5: Solve for x
    x = 690,788,823.48/28,203.30
  6. Step 6: Final answer
    x = 24,493.19

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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.