Home / 12,286,809.30-18,406,713.15-6,605,145.30

Finding the Fourth Proportional to 12,286,809.30, 18,406,713.15 and 6,605,145.30

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Solution

The fourth proportional to 12,286,809.30, 18,406,713.15 and 6,605,145.30 is: 9,895,084.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,286,809.30 : 18,406,713.15 = 6,605,145.30 : x
  2. Step 2: Convert to fraction form
    12,286,809.30/18,406,713.15 = 6,605,145.30/x
  3. Step 3: Cross multiply
    12,286,809.30x = 18,406,713.15 × 6,605,145.30
  4. Step 4: Simplify right side
    12,286,809.30x = 121,579,014,851,170.69
  5. Step 5: Solve for x
    x = 121,579,014,851,170.69/12,286,809.30
  6. Step 6: Final answer
    x = 9,895,084.39

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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.