Home / 18,915.55-28,377.42-5,767.57

Finding the Fourth Proportional to 18,915.55, 28,377.42 and 5,767.57

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Solution

The fourth proportional to 18,915.55, 28,377.42 and 5,767.57 is: 8,652.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,915.55 : 28,377.42 = 5,767.57 : x
  2. Step 2: Convert to fraction form
    18,915.55/28,377.42 = 5,767.57/x
  3. Step 3: Cross multiply
    18,915.55x = 28,377.42 × 5,767.57
  4. Step 4: Simplify right side
    18,915.55x = 163,668,756.27
  5. Step 5: Solve for x
    x = 163,668,756.27/18,915.55
  6. Step 6: Final answer
    x = 8,652.60

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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.