Home / 15,132.56-20,880.68-8,418.26

Finding the Fourth Proportional to 15,132.56, 20,880.68 and 8,418.26

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Solution

The fourth proportional to 15,132.56, 20,880.68 and 8,418.26 is: 11,615.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,132.56 : 20,880.68 = 8,418.26 : x
  2. Step 2: Convert to fraction form
    15,132.56/20,880.68 = 8,418.26/x
  3. Step 3: Cross multiply
    15,132.56x = 20,880.68 × 8,418.26
  4. Step 4: Simplify right side
    15,132.56x = 175,779,003.33
  5. Step 5: Solve for x
    x = 175,779,003.33/15,132.56
  6. Step 6: Final answer
    x = 11,615.95

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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.