Home / 25,990.32-35,861.40-15,381.36

Finding the Fourth Proportional to 25,990.32, 35,861.40 and 15,381.36

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Solution

The fourth proportional to 25,990.32, 35,861.40 and 15,381.36 is: 21,223.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,990.32 : 35,861.40 = 15,381.36 : x
  2. Step 2: Convert to fraction form
    25,990.32/35,861.40 = 15,381.36/x
  3. Step 3: Cross multiply
    25,990.32x = 35,861.40 × 15,381.36
  4. Step 4: Simplify right side
    25,990.32x = 551,597,103.50
  5. Step 5: Solve for x
    x = 551,597,103.50/25,990.32
  6. Step 6: Final answer
    x = 21,223.17

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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.