Home / 20,610,000.40-30,915,000.60-10,406,333.20

Finding the Fourth Proportional to 20,610,000.40, 30,915,000.60 and 10,406,333.20

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Solution

The fourth proportional to 20,610,000.40, 30,915,000.60 and 10,406,333.20 is: 15,609,499.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,610,000.40 : 30,915,000.60 = 10,406,333.20 : x
  2. Step 2: Convert to fraction form
    20,610,000.40/30,915,000.60 = 10,406,333.20/x
  3. Step 3: Cross multiply
    20,610,000.40x = 30,915,000.60 × 10,406,333.20
  4. Step 4: Simplify right side
    20,610,000.40x = 321,711,797,121,799.94
  5. Step 5: Solve for x
    x = 321,711,797,121,799.94/20,610,000.40
  6. Step 6: Final answer
    x = 15,609,499.80

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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.