Home / 20,112,331.20-30,168,496.80-7,342,000.80

Finding the Fourth Proportional to 20,112,331.20, 30,168,496.80 and 7,342,000.80

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Solution

The fourth proportional to 20,112,331.20, 30,168,496.80 and 7,342,000.80 is: 11,013,001.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,112,331.20 : 30,168,496.80 = 7,342,000.80 : x
  2. Step 2: Convert to fraction form
    20,112,331.20/30,168,496.80 = 7,342,000.80/x
  3. Step 3: Cross multiply
    20,112,331.20x = 30,168,496.80 × 7,342,000.80
  4. Step 4: Simplify right side
    20,112,331.20x = 221,497,127,640,397.44
  5. Step 5: Solve for x
    x = 221,497,127,640,397.44/20,112,331.20
  6. Step 6: Final answer
    x = 11,013,001.20

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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.