Home / 15,326.02-21,148.60-8,611.12

Finding the Fourth Proportional to 15,326.02, 21,148.60 and 8,611.12

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Solution

The fourth proportional to 15,326.02, 21,148.60 and 8,611.12 is: 11,882.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,326.02 : 21,148.60 = 8,611.12 : x
  2. Step 2: Convert to fraction form
    15,326.02/21,148.60 = 8,611.12/x
  3. Step 3: Cross multiply
    15,326.02x = 21,148.60 × 8,611.12
  4. Step 4: Simplify right side
    15,326.02x = 182,113,132.43
  5. Step 5: Solve for x
    x = 182,113,132.43/15,326.02
  6. Step 6: Final answer
    x = 11,882.61

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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.