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Finding the Fourth Proportional to 25,612.68, 35,350.08 and 20,347.68

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Solution

The fourth proportional to 25,612.68, 35,350.08 and 20,347.68 is: 28,083.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,612.68 : 35,350.08 = 20,347.68 : x
  2. Step 2: Convert to fraction form
    25,612.68/35,350.08 = 20,347.68/x
  3. Step 3: Cross multiply
    25,612.68x = 35,350.08 × 20,347.68
  4. Step 4: Simplify right side
    25,612.68x = 719,292,115.81
  5. Step 5: Solve for x
    x = 719,292,115.81/25,612.68
  6. Step 6: Final answer
    x = 28,083.44

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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.