Home / 25,659.32-38,490.06-8,128.76

Finding the Fourth Proportional to 25,659.32, 38,490.06 and 8,128.76

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Solution

The fourth proportional to 25,659.32, 38,490.06 and 8,128.76 is: 12,193.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,659.32 : 38,490.06 = 8,128.76 : x
  2. Step 2: Convert to fraction form
    25,659.32/38,490.06 = 8,128.76/x
  3. Step 3: Cross multiply
    25,659.32x = 38,490.06 × 8,128.76
  4. Step 4: Simplify right side
    25,659.32x = 312,876,460.13
  5. Step 5: Solve for x
    x = 312,876,460.13/25,659.32
  6. Step 6: Final answer
    x = 12,193.48

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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.