Home / 28,031,298.60-42,046,947.90-20,856,845.10

Finding the Fourth Proportional to 28,031,298.60, 42,046,947.90 and 20,856,845.10

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Solution

The fourth proportional to 28,031,298.60, 42,046,947.90 and 20,856,845.10 is: 31,285,267.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,031,298.60 : 42,046,947.90 = 20,856,845.10 : x
  2. Step 2: Convert to fraction form
    28,031,298.60/42,046,947.90 = 20,856,845.10/x
  3. Step 3: Cross multiply
    28,031,298.60x = 42,046,947.90 × 20,856,845.10
  4. Step 4: Simplify right side
    28,031,298.60x = 876,966,679,278,070.38
  5. Step 5: Solve for x
    x = 876,966,679,278,070.38/28,031,298.60
  6. Step 6: Final answer
    x = 31,285,267.65

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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.