Home / 13,129,320.50-18,117,725.20-7,328,476.22

Finding the Fourth Proportional to 13,129,320.50, 18,117,725.20 and 7,328,476.22

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Solution

The fourth proportional to 13,129,320.50, 18,117,725.20 and 7,328,476.22 is: 10,112,885.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,129,320.50 : 18,117,725.20 = 7,328,476.22 : x
  2. Step 2: Convert to fraction form
    13,129,320.50/18,117,725.20 = 7,328,476.22/x
  3. Step 3: Cross multiply
    13,129,320.50x = 18,117,725.20 × 7,328,476.22
  4. Step 4: Simplify right side
    13,129,320.50x = 132,775,318,288,694.73
  5. Step 5: Solve for x
    x = 132,775,318,288,694.73/13,129,320.50
  6. Step 6: Final answer
    x = 10,112,885.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.