Home / 10,191,938.40-15,287,907.60-8,278,750.80

Finding the Fourth Proportional to 10,191,938.40, 15,287,907.60 and 8,278,750.80

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Solution

The fourth proportional to 10,191,938.40, 15,287,907.60 and 8,278,750.80 is: 12,418,126.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,191,938.40 : 15,287,907.60 = 8,278,750.80 : x
  2. Step 2: Convert to fraction form
    10,191,938.40/15,287,907.60 = 8,278,750.80/x
  3. Step 3: Cross multiply
    10,191,938.40x = 15,287,907.60 × 8,278,750.80
  4. Step 4: Simplify right side
    10,191,938.40x = 126,564,777,273,826.08
  5. Step 5: Solve for x
    x = 126,564,777,273,826.08/10,191,938.40
  6. Step 6: Final answer
    x = 12,418,126.20

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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.