Home / 28,161.23-38,861.91-15,414.10

Finding the Fourth Proportional to 28,161.23, 38,861.91 and 15,414.10

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Solution

The fourth proportional to 28,161.23, 38,861.91 and 15,414.10 is: 21,271.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,161.23 : 38,861.91 = 15,414.10 : x
  2. Step 2: Convert to fraction form
    28,161.23/38,861.91 = 15,414.10/x
  3. Step 3: Cross multiply
    28,161.23x = 38,861.91 × 15,414.10
  4. Step 4: Simplify right side
    28,161.23x = 599,021,269.78
  5. Step 5: Solve for x
    x = 599,021,269.78/28,161.23
  6. Step 6: Final answer
    x = 21,271.14

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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.