Home / 12,248,141.10-18,372,211.65-8,421,765.90

Finding the Fourth Proportional to 12,248,141.10, 18,372,211.65 and 8,421,765.90

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Solution

The fourth proportional to 12,248,141.10, 18,372,211.65 and 8,421,765.90 is: 12,632,648.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,248,141.10 : 18,372,211.65 = 8,421,765.90 : x
  2. Step 2: Convert to fraction form
    12,248,141.10/18,372,211.65 = 8,421,765.90/x
  3. Step 3: Cross multiply
    12,248,141.10x = 18,372,211.65 × 8,421,765.90
  4. Step 4: Simplify right side
    12,248,141.10x = 154,726,465,581,552.72
  5. Step 5: Solve for x
    x = 154,726,465,581,552.72/12,248,141.10
  6. Step 6: Final answer
    x = 12,632,648.85

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1.5x scale

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.