Home / 18,873,722.70-28,331,870.85-12,496,430.70

Finding the Fourth Proportional to 18,873,722.70, 28,331,870.85 and 12,496,430.70

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Solution

The fourth proportional to 18,873,722.70, 28,331,870.85 and 12,496,430.70 is: 18,758,740.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,873,722.70 : 28,331,870.85 = 12,496,430.70 : x
  2. Step 2: Convert to fraction form
    18,873,722.70/28,331,870.85 = 12,496,430.70/x
  3. Step 3: Cross multiply
    18,873,722.70x = 28,331,870.85 × 12,496,430.70
  4. Step 4: Simplify right side
    18,873,722.70x = 354,047,260,678,375.06
  5. Step 5: Solve for x
    x = 354,047,260,678,375.06/18,873,722.70
  6. Step 6: Final answer
    x = 18,758,740.20

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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.