Home / 13,318,438.28-18,245,955.11-12,820,498.61

Finding the Fourth Proportional to 13,318,438.28, 18,245,955.11 and 12,820,498.61

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Solution

The fourth proportional to 13,318,438.28, 18,245,955.11 and 12,820,498.61 is: 17,563,789.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318,438.28 : 18,245,955.11 = 12,820,498.61 : x
  2. Step 2: Convert to fraction form
    13,318,438.28/18,245,955.11 = 12,820,498.61/x
  3. Step 3: Cross multiply
    13,318,438.28x = 18,245,955.11 × 12,820,498.61
  4. Step 4: Simplify right side
    13,318,438.28x = 233,922,241,970,545.16
  5. Step 5: Solve for x
    x = 233,922,241,970,545.16/13,318,438.28
  6. Step 6: Final answer
    x = 17,563,789.17

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.