Home / 18,878,472.30-28,317,627.63-5,231,579.70

Finding the Fourth Proportional to 18,878,472.30, 28,317,627.63 and 5,231,579.70

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Solution

The fourth proportional to 18,878,472.30, 28,317,627.63 and 5,231,579.70 is: 7,847,347.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,878,472.30 : 28,317,627.63 = 5,231,579.70 : x
  2. Step 2: Convert to fraction form
    18,878,472.30/28,317,627.63 = 5,231,579.70/x
  3. Step 3: Cross multiply
    18,878,472.30x = 28,317,627.63 × 5,231,579.70
  4. Step 4: Simplify right side
    18,878,472.30x = 148,145,925,861,267.12
  5. Step 5: Solve for x
    x = 148,145,925,861,267.12/18,878,472.30
  6. Step 6: Final answer
    x = 7,847,347.15

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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.