Home / 20,578,236.75-28,398,488.13-11,286,176.76

Finding the Fourth Proportional to 20,578,236.75, 28,398,488.13 and 11,286,176.76

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Solution

The fourth proportional to 20,578,236.75, 28,398,488.13 and 11,286,176.76 is: 15,575,209.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,578,236.75 : 28,398,488.13 = 11,286,176.76 : x
  2. Step 2: Convert to fraction form
    20,578,236.75/28,398,488.13 = 11,286,176.76/x
  3. Step 3: Cross multiply
    20,578,236.75x = 28,398,488.13 × 11,286,176.76
  4. Step 4: Simplify right side
    20,578,236.75x = 320,510,356,751,941.81
  5. Step 5: Solve for x
    x = 320,510,356,751,941.81/20,578,236.75
  6. Step 6: Final answer
    x = 15,575,209.90

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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.