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Finding the Fourth Proportional to 15,773,890.20, 21,768,034.08 and 8,530,546.20

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Solution

The fourth proportional to 15,773,890.20, 21,768,034.08 and 8,530,546.20 is: 11,772,189.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,773,890.20 : 21,768,034.08 = 8,530,546.20 : x
  2. Step 2: Convert to fraction form
    15,773,890.20/21,768,034.08 = 8,530,546.20/x
  3. Step 3: Cross multiply
    15,773,890.20x = 21,768,034.08 × 8,530,546.20
  4. Step 4: Simplify right side
    15,773,890.20x = 185,693,220,402,614.47
  5. Step 5: Solve for x
    x = 185,693,220,402,614.47/15,773,890.20
  6. Step 6: Final answer
    x = 11,772,189.23

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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.