Home / 25,720.19-38,587.59-8,191.38

Finding the Fourth Proportional to 25,720.19, 38,587.59 and 8,191.38

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Solution

The fourth proportional to 25,720.19, 38,587.59 and 8,191.38 is: 12,289.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,720.19 : 38,587.59 = 8,191.38 : x
  2. Step 2: Convert to fraction form
    25,720.19/38,587.59 = 8,191.38/x
  3. Step 3: Cross multiply
    25,720.19x = 38,587.59 × 8,191.38
  4. Step 4: Simplify right side
    25,720.19x = 316,085,612.97
  5. Step 5: Solve for x
    x = 316,085,612.97/25,720.19
  6. Step 6: Final answer
    x = 12,289.40

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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.