Home / 15,661.41-21,612.74-8,587.95

Finding the Fourth Proportional to 15,661.41, 21,612.74 and 8,587.95

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Solution

The fourth proportional to 15,661.41, 21,612.74 and 8,587.95 is: 11,851.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,661.41 : 21,612.74 = 8,587.95 : x
  2. Step 2: Convert to fraction form
    15,661.41/21,612.74 = 8,587.95/x
  3. Step 3: Cross multiply
    15,661.41x = 21,612.74 × 8,587.95
  4. Step 4: Simplify right side
    15,661.41x = 185,609,087.54
  5. Step 5: Solve for x
    x = 185,609,087.54/15,661.41
  6. Step 6: Final answer
    x = 11,851.37

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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.