Home / 27,806.30-38,363.16-15,861.04

Finding the Fourth Proportional to 27,806.30, 38,363.16 and 15,861.04

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Solution

The fourth proportional to 27,806.30, 38,363.16 and 15,861.04 is: 21,882.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,806.30 : 38,363.16 = 15,861.04 : x
  2. Step 2: Convert to fraction form
    27,806.30/38,363.16 = 15,861.04/x
  3. Step 3: Cross multiply
    27,806.30x = 38,363.16 × 15,861.04
  4. Step 4: Simplify right side
    27,806.30x = 608,479,615.29
  5. Step 5: Solve for x
    x = 608,479,615.29/27,806.30
  6. Step 6: Final answer
    x = 21,882.80

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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.