Home / 13,909,620.40-20,864,430.60-11,520,833.20

Finding the Fourth Proportional to 13,909,620.40, 20,864,430.60 and 11,520,833.20

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Solution

The fourth proportional to 13,909,620.40, 20,864,430.60 and 11,520,833.20 is: 17,281,249.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,909,620.40 : 20,864,430.60 = 11,520,833.20 : x
  2. Step 2: Convert to fraction form
    13,909,620.40/20,864,430.60 = 11,520,833.20/x
  3. Step 3: Cross multiply
    13,909,620.40x = 20,864,430.60 × 11,520,833.20
  4. Step 4: Simplify right side
    13,909,620.40x = 240,375,624,755,575.91
  5. Step 5: Solve for x
    x = 240,375,624,755,575.91/13,909,620.40
  6. Step 6: Final answer
    x = 17,281,249.80

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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.