Home / 18,702,934.40-28,007,162.40-12,278,403.20

Finding the Fourth Proportional to 18,702,934.40, 28,007,162.40 and 12,278,403.20

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Solution

The fourth proportional to 18,702,934.40, 28,007,162.40 and 12,278,403.20 is: 18,386,592.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,702,934.40 : 28,007,162.40 = 12,278,403.20 : x
  2. Step 2: Convert to fraction form
    18,702,934.40/28,007,162.40 = 12,278,403.20/x
  3. Step 3: Cross multiply
    18,702,934.40x = 28,007,162.40 × 12,278,403.20
  4. Step 4: Simplify right side
    18,702,934.40x = 343,883,232,435,079.62
  5. Step 5: Solve for x
    x = 343,883,232,435,079.62/18,702,934.40
  6. Step 6: Final answer
    x = 18,386,592.45

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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.