Home / 12,642,990.76-18,956,806.50-4,957,427.72

Finding the Fourth Proportional to 12,642,990.76, 18,956,806.50 and 4,957,427.72

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Solution

The fourth proportional to 12,642,990.76, 18,956,806.50 and 4,957,427.72 is: 7,433,130.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,642,990.76 : 18,956,806.50 = 4,957,427.72 : x
  2. Step 2: Convert to fraction form
    12,642,990.76/18,956,806.50 = 4,957,427.72/x
  3. Step 3: Cross multiply
    12,642,990.76x = 18,956,806.50 × 4,957,427.72
  4. Step 4: Simplify right side
    12,642,990.76x = 93,976,998,025,776.17
  5. Step 5: Solve for x
    x = 93,976,998,025,776.17/12,642,990.76
  6. Step 6: Final answer
    x = 7,433,130.33

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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.