Home / 16,890.30-25,335.45-13,779.90

Finding the Fourth Proportional to 16,890.30, 25,335.45 and 13,779.90

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Solution

The fourth proportional to 16,890.30, 25,335.45 and 13,779.90 is: 20,669.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,890.30 : 25,335.45 = 13,779.90 : x
  2. Step 2: Convert to fraction form
    16,890.30/25,335.45 = 13,779.90/x
  3. Step 3: Cross multiply
    16,890.30x = 25,335.45 × 13,779.90
  4. Step 4: Simplify right side
    16,890.30x = 349,119,967.46
  5. Step 5: Solve for x
    x = 349,119,967.46/16,890.30
  6. Step 6: Final answer
    x = 20,669.85

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Similar ratio
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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.