Home / 20,004.30-30,006.45-13,005.90

Finding the Fourth Proportional to 20,004.30, 30,006.45 and 13,005.90

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Solution

The fourth proportional to 20,004.30, 30,006.45 and 13,005.90 is: 19,508.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,004.30 : 30,006.45 = 13,005.90 : x
  2. Step 2: Convert to fraction form
    20,004.30/30,006.45 = 13,005.90/x
  3. Step 3: Cross multiply
    20,004.30x = 30,006.45 × 13,005.90
  4. Step 4: Simplify right side
    20,004.30x = 390,260,888.06
  5. Step 5: Solve for x
    x = 390,260,888.06/20,004.30
  6. Step 6: Final answer
    x = 19,508.85

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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.