Home / 25,990.13-35,875.60-15,379.74

Finding the Fourth Proportional to 25,990.13, 35,875.60 and 15,379.74

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Solution

The fourth proportional to 25,990.13, 35,875.60 and 15,379.74 is: 21,229.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,990.13 : 35,875.60 = 15,379.74 : x
  2. Step 2: Convert to fraction form
    25,990.13/35,875.60 = 15,379.74/x
  3. Step 3: Cross multiply
    25,990.13x = 35,875.60 × 15,379.74
  4. Step 4: Simplify right side
    25,990.13x = 551,757,361.89
  5. Step 5: Solve for x
    x = 551,757,361.89/25,990.13
  6. Step 6: Final answer
    x = 21,229.49

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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.