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Finding the Fourth Proportional to 25,661.27, 38,492.99 and 8,130.71

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Solution

The fourth proportional to 25,661.27, 38,492.99 and 8,130.71 is: 12,196.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,661.27 : 38,492.99 = 8,130.71 : x
  2. Step 2: Convert to fraction form
    25,661.27/38,492.99 = 8,130.71/x
  3. Step 3: Cross multiply
    25,661.27x = 38,492.99 × 8,130.71
  4. Step 4: Simplify right side
    25,661.27x = 312,975,105.60
  5. Step 5: Solve for x
    x = 312,975,105.60/25,661.27
  6. Step 6: Final answer
    x = 12,196.40

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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.