Home / 25,611.20-38,438.40-11,592.80

Finding the Fourth Proportional to 25,611.20, 38,438.40 and 11,592.80

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Solution

The fourth proportional to 25,611.20, 38,438.40 and 11,592.80 is: 17,398.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,611.20 : 38,438.40 = 11,592.80 : x
  2. Step 2: Convert to fraction form
    25,611.20/38,438.40 = 11,592.80/x
  3. Step 3: Cross multiply
    25,611.20x = 38,438.40 × 11,592.80
  4. Step 4: Simplify right side
    25,611.20x = 445,608,683.52
  5. Step 5: Solve for x
    x = 445,608,683.52/25,611.20
  6. Step 6: Final answer
    x = 17,398.98

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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.