Home / 20,651,972-28,500,259.08-11,359,781.60

Finding the Fourth Proportional to 20,651,972, 28,500,259.08 and 11,359,781.60

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Solution

The fourth proportional to 20,651,972, 28,500,259.08 and 11,359,781.60 is: 15,676,794.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,651,972 : 28,500,259.08 = 11,359,781.60 : x
  2. Step 2: Convert to fraction form
    20,651,972/28,500,259.08 = 11,359,781.60/x
  3. Step 3: Cross multiply
    20,651,972x = 28,500,259.08 × 11,359,781.60
  4. Step 4: Simplify right side
    20,651,972x = 323,756,718,692,216.88
  5. Step 5: Solve for x
    x = 323,756,718,692,216.88/20,651,972
  6. Step 6: Final answer
    x = 15,676,794.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.