Home / 15,390,307.80-21,236,757.80-8,866,049.40

Finding the Fourth Proportional to 15,390,307.80, 21,236,757.80 and 8,866,049.40

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Solution

The fourth proportional to 15,390,307.80, 21,236,757.80 and 8,866,049.40 is: 12,234,072.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,390,307.80 : 21,236,757.80 = 8,866,049.40 : x
  2. Step 2: Convert to fraction form
    15,390,307.80/21,236,757.80 = 8,866,049.40/x
  3. Step 3: Cross multiply
    15,390,307.80x = 21,236,757.80 × 8,866,049.40
  4. Step 4: Simplify right side
    15,390,307.80x = 188,286,143,706,305.09
  5. Step 5: Solve for x
    x = 188,286,143,706,305.09/15,390,307.80
  6. Step 6: Final answer
    x = 12,234,072.65

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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.