Home / 15,261.41-21,061.82-8,889.55

Finding the Fourth Proportional to 15,261.41, 21,061.82 and 8,889.55

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Solution

The fourth proportional to 15,261.41, 21,061.82 and 8,889.55 is: 12,268.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,261.41 : 21,061.82 = 8,889.55 : x
  2. Step 2: Convert to fraction form
    15,261.41/21,061.82 = 8,889.55/x
  3. Step 3: Cross multiply
    15,261.41x = 21,061.82 × 8,889.55
  4. Step 4: Simplify right side
    15,261.41x = 187,230,071.55
  5. Step 5: Solve for x
    x = 187,230,071.55/15,261.41
  6. Step 6: Final answer
    x = 12,268.20

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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.