Home / 15,365.38-21,205.82-9,401.02

Finding the Fourth Proportional to 15,365.38, 21,205.82 and 9,401.02

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Solution

The fourth proportional to 15,365.38, 21,205.82 and 9,401.02 is: 12,974.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,365.38 : 21,205.82 = 9,401.02 : x
  2. Step 2: Convert to fraction form
    15,365.38/21,205.82 = 9,401.02/x
  3. Step 3: Cross multiply
    15,365.38x = 21,205.82 × 9,401.02
  4. Step 4: Simplify right side
    15,365.38x = 199,356,337.94
  5. Step 5: Solve for x
    x = 199,356,337.94/15,365.38
  6. Step 6: Final answer
    x = 12,974.38

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1.5x scale

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.