Home / 15,090.27-20,823.59-8,375.57

Finding the Fourth Proportional to 15,090.27, 20,823.59 and 8,375.57

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Solution

The fourth proportional to 15,090.27, 20,823.59 and 8,375.57 is: 11,557.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,090.27 : 20,823.59 = 8,375.57 : x
  2. Step 2: Convert to fraction form
    15,090.27/20,823.59 = 8,375.57/x
  3. Step 3: Cross multiply
    15,090.27x = 20,823.59 × 8,375.57
  4. Step 4: Simplify right side
    15,090.27x = 174,409,393.82
  5. Step 5: Solve for x
    x = 174,409,393.82/15,090.27
  6. Step 6: Final answer
    x = 11,557.74

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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.