Home / 12,286,819.80-18,406,728.90-6,605,155.80

Finding the Fourth Proportional to 12,286,819.80, 18,406,728.90 and 6,605,155.80

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Solution

The fourth proportional to 12,286,819.80, 18,406,728.90 and 6,605,155.80 is: 9,895,100.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,286,819.80 : 18,406,728.90 = 6,605,155.80 : x
  2. Step 2: Convert to fraction form
    12,286,819.80/18,406,728.90 = 6,605,155.80/x
  3. Step 3: Cross multiply
    12,286,819.80x = 18,406,728.90 × 6,605,155.80
  4. Step 4: Simplify right side
    12,286,819.80x = 121,579,312,152,862.61
  5. Step 5: Solve for x
    x = 121,579,312,152,862.61/12,286,819.80
  6. Step 6: Final answer
    x = 9,895,100.13

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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.