Home / 28,269.78-39,013-15,524.22

Finding the Fourth Proportional to 28,269.78, 39,013 and 15,524.22

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Solution

The fourth proportional to 28,269.78, 39,013 and 15,524.22 is: 21,423.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,269.78 : 39,013 = 15,524.22 : x
  2. Step 2: Convert to fraction form
    28,269.78/39,013 = 15,524.22/x
  3. Step 3: Cross multiply
    28,269.78x = 39,013 × 15,524.22
  4. Step 4: Simplify right side
    28,269.78x = 605,646,394.86
  5. Step 5: Solve for x
    x = 605,646,394.86/28,269.78
  6. Step 6: Final answer
    x = 21,423.81

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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.