Home / 15,325.56-21,149.36-8,611.47

Finding the Fourth Proportional to 15,325.56, 21,149.36 and 8,611.47

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Solution

The fourth proportional to 15,325.56, 21,149.36 and 8,611.47 is: 11,883.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,325.56 : 21,149.36 = 8,611.47 : x
  2. Step 2: Convert to fraction form
    15,325.56/21,149.36 = 8,611.47/x
  3. Step 3: Cross multiply
    15,325.56x = 21,149.36 × 8,611.47
  4. Step 4: Simplify right side
    15,325.56x = 182,127,036.10
  5. Step 5: Solve for x
    x = 182,127,036.10/15,325.56
  6. Step 6: Final answer
    x = 11,883.87

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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.