Home / 18,715,785.80-28,073,678.70-12,551,070.20

Finding the Fourth Proportional to 18,715,785.80, 28,073,678.70 and 12,551,070.20

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Solution

The fourth proportional to 18,715,785.80, 28,073,678.70 and 12,551,070.20 is: 18,826,605.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,715,785.80 : 28,073,678.70 = 12,551,070.20 : x
  2. Step 2: Convert to fraction form
    18,715,785.80/28,073,678.70 = 12,551,070.20/x
  3. Step 3: Cross multiply
    18,715,785.80x = 28,073,678.70 × 12,551,070.20
  4. Step 4: Simplify right side
    18,715,785.80x = 352,354,712,135,944.69
  5. Step 5: Solve for x
    x = 352,354,712,135,944.69/18,715,785.80
  6. Step 6: Final answer
    x = 18,826,605.30

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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.