Home / 27,760.96-38,312.76-15,187.60

Finding the Fourth Proportional to 27,760.96, 38,312.76 and 15,187.60

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Solution

The fourth proportional to 27,760.96, 38,312.76 and 15,187.60 is: 20,960.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,760.96 : 38,312.76 = 15,187.60 : x
  2. Step 2: Convert to fraction form
    27,760.96/38,312.76 = 15,187.60/x
  3. Step 3: Cross multiply
    27,760.96x = 38,312.76 × 15,187.60
  4. Step 4: Simplify right side
    27,760.96x = 581,878,873.78
  5. Step 5: Solve for x
    x = 581,878,873.78/27,760.96
  6. Step 6: Final answer
    x = 20,960.33

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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.