Home / 18,731,138.40-28,096,707.60-12,012,674.40

Finding the Fourth Proportional to 18,731,138.40, 28,096,707.60 and 12,012,674.40

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Solution

The fourth proportional to 18,731,138.40, 28,096,707.60 and 12,012,674.40 is: 18,019,011.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,731,138.40 : 28,096,707.60 = 12,012,674.40 : x
  2. Step 2: Convert to fraction form
    18,731,138.40/28,096,707.60 = 12,012,674.40/x
  3. Step 3: Cross multiply
    18,731,138.40x = 28,096,707.60 × 12,012,674.40
  4. Step 4: Simplify right side
    18,731,138.40x = 337,516,600,110,805.44
  5. Step 5: Solve for x
    x = 337,516,600,110,805.44/18,731,138.40
  6. Step 6: Final answer
    x = 18,019,011.60

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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.