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Finding the Fourth Proportional to 25,253.76, 37,899.36 and 20,381.76

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Solution

The fourth proportional to 25,253.76, 37,899.36 and 20,381.76 is: 30,587.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,253.76 : 37,899.36 = 20,381.76 : x
  2. Step 2: Convert to fraction form
    25,253.76/37,899.36 = 20,381.76/x
  3. Step 3: Cross multiply
    25,253.76x = 37,899.36 × 20,381.76
  4. Step 4: Simplify right side
    25,253.76x = 772,455,659.67
  5. Step 5: Solve for x
    x = 772,455,659.67/25,253.76
  6. Step 6: Final answer
    x = 30,587.75

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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.