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Finding the Fourth Proportional to 25,679.68, 35,440.74 and 15,070.84

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Solution

The fourth proportional to 25,679.68, 35,440.74 and 15,070.84 is: 20,799.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,679.68 : 35,440.74 = 15,070.84 : x
  2. Step 2: Convert to fraction form
    25,679.68/35,440.74 = 15,070.84/x
  3. Step 3: Cross multiply
    25,679.68x = 35,440.74 × 15,070.84
  4. Step 4: Simplify right side
    25,679.68x = 534,121,722.02
  5. Step 5: Solve for x
    x = 534,121,722.02/25,679.68
  6. Step 6: Final answer
    x = 20,799.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.