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Finding the Fourth Proportional to 18,750,798.72, 28,127,296.46 and 7,236,326.34

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Solution

The fourth proportional to 18,750,798.72, 28,127,296.46 and 7,236,326.34 is: 10,854,913.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,750,798.72 : 28,127,296.46 = 7,236,326.34 : x
  2. Step 2: Convert to fraction form
    18,750,798.72/28,127,296.46 = 7,236,326.34/x
  3. Step 3: Cross multiply
    18,750,798.72x = 28,127,296.46 × 7,236,326.34
  4. Step 4: Simplify right side
    18,750,798.72x = 203,538,296,264,577.56
  5. Step 5: Solve for x
    x = 203,538,296,264,577.56/18,750,798.72
  6. Step 6: Final answer
    x = 10,854,913.40

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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.