Home / 28,471,420-39,290,501.28-15,418,675

Finding the Fourth Proportional to 28,471,420, 39,290,501.28 and 15,418,675

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Solution

The fourth proportional to 28,471,420, 39,290,501.28 and 15,418,675 is: 21,277,739.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,471,420 : 39,290,501.28 = 15,418,675 : x
  2. Step 2: Convert to fraction form
    28,471,420/39,290,501.28 = 15,418,675/x
  3. Step 3: Cross multiply
    28,471,420x = 39,290,501.28 × 15,418,675
  4. Step 4: Simplify right side
    28,471,420x = 605,807,469,823,404
  5. Step 5: Solve for x
    x = 605,807,469,823,404/28,471,420
  6. Step 6: Final answer
    x = 21,277,739.92

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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.