Home / 18,702,937.40-28,007,166.90-12,278,406.20

Finding the Fourth Proportional to 18,702,937.40, 28,007,166.90 and 12,278,406.20

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Solution

The fourth proportional to 18,702,937.40, 28,007,166.90 and 12,278,406.20 is: 18,386,596.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,702,937.40 : 28,007,166.90 = 12,278,406.20 : x
  2. Step 2: Convert to fraction form
    18,702,937.40/28,007,166.90 = 12,278,406.20/x
  3. Step 3: Cross multiply
    18,702,937.40x = 28,007,166.90 × 12,278,406.20
  4. Step 4: Simplify right side
    18,702,937.40x = 343,883,371,709,394.75
  5. Step 5: Solve for x
    x = 343,883,371,709,394.75/18,702,937.40
  6. Step 6: Final answer
    x = 18,386,596.95

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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.