Home / 18,915.50-28,365.04-6,432.18

Finding the Fourth Proportional to 18,915.50, 28,365.04 and 6,432.18

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Solution

The fourth proportional to 18,915.50, 28,365.04 and 6,432.18 is: 9,645.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,915.50 : 28,365.04 = 6,432.18 : x
  2. Step 2: Convert to fraction form
    18,915.50/28,365.04 = 6,432.18/x
  3. Step 3: Cross multiply
    18,915.50x = 28,365.04 × 6,432.18
  4. Step 4: Simplify right side
    18,915.50x = 182,448,944.66
  5. Step 5: Solve for x
    x = 182,448,944.66/18,915.50
  6. Step 6: Final answer
    x = 9,645.47

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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.