Home / 25,615.42-38,429.30-8,085.20

Finding the Fourth Proportional to 25,615.42, 38,429.30 and 8,085.20

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Solution

The fourth proportional to 25,615.42, 38,429.30 and 8,085.20 is: 12,129.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,615.42 : 38,429.30 = 8,085.20 : x
  2. Step 2: Convert to fraction form
    25,615.42/38,429.30 = 8,085.20/x
  3. Step 3: Cross multiply
    25,615.42x = 38,429.30 × 8,085.20
  4. Step 4: Simplify right side
    25,615.42x = 310,708,404.43
  5. Step 5: Solve for x
    x = 310,708,404.43/25,615.42
  6. Step 6: Final answer
    x = 12,129.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.