Home / 25,661.40-38,492.10-8,131.20

Finding the Fourth Proportional to 25,661.40, 38,492.10 and 8,131.20

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Solution

The fourth proportional to 25,661.40, 38,492.10 and 8,131.20 is: 12,196.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,661.40 : 38,492.10 = 8,131.20 : x
  2. Step 2: Convert to fraction form
    25,661.40/38,492.10 = 8,131.20/x
  3. Step 3: Cross multiply
    25,661.40x = 38,492.10 × 8,131.20
  4. Step 4: Simplify right side
    25,661.40x = 312,986,963.52
  5. Step 5: Solve for x
    x = 312,986,963.52/25,661.40
  6. Step 6: Final answer
    x = 12,196.80

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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.