Home / 27,647.92-38,158.08-15,708.88

Finding the Fourth Proportional to 27,647.92, 38,158.08 and 15,708.88

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Solution

The fourth proportional to 27,647.92, 38,158.08 and 15,708.88 is: 21,680.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,647.92 : 38,158.08 = 15,708.88 : x
  2. Step 2: Convert to fraction form
    27,647.92/38,158.08 = 15,708.88/x
  3. Step 3: Cross multiply
    27,647.92x = 38,158.08 × 15,708.88
  4. Step 4: Simplify right side
    27,647.92x = 599,420,699.75
  5. Step 5: Solve for x
    x = 599,420,699.75/27,647.92
  6. Step 6: Final answer
    x = 21,680.50

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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.