Home / 27,778.50-38,316.33-18,719.46

Finding the Fourth Proportional to 27,778.50, 38,316.33 and 18,719.46

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Solution

The fourth proportional to 27,778.50, 38,316.33 and 18,719.46 is: 25,820.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,778.50 : 38,316.33 = 18,719.46 : x
  2. Step 2: Convert to fraction form
    27,778.50/38,316.33 = 18,719.46/x
  3. Step 3: Cross multiply
    27,778.50x = 38,316.33 × 18,719.46
  4. Step 4: Simplify right side
    27,778.50x = 717,261,006.78
  5. Step 5: Solve for x
    x = 717,261,006.78/27,778.50
  6. Step 6: Final answer
    x = 25,820.72

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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.