Home / 28,088.27-38,761.56-15,512.75

Finding the Fourth Proportional to 28,088.27, 38,761.56 and 15,512.75

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Solution

The fourth proportional to 28,088.27, 38,761.56 and 15,512.75 is: 21,407.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,088.27 : 38,761.56 = 15,512.75 : x
  2. Step 2: Convert to fraction form
    28,088.27/38,761.56 = 15,512.75/x
  3. Step 3: Cross multiply
    28,088.27x = 38,761.56 × 15,512.75
  4. Step 4: Simplify right side
    28,088.27x = 601,298,389.89
  5. Step 5: Solve for x
    x = 601,298,389.89/28,088.27
  6. Step 6: Final answer
    x = 21,407.46

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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.