Home / 18,915.18-28,387.90-8,527.74

Finding the Fourth Proportional to 18,915.18, 28,387.90 and 8,527.74

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Solution

The fourth proportional to 18,915.18, 28,387.90 and 8,527.74 is: 12,798.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,915.18 : 28,387.90 = 8,527.74 : x
  2. Step 2: Convert to fraction form
    18,915.18/28,387.90 = 8,527.74/x
  3. Step 3: Cross multiply
    18,915.18x = 28,387.90 × 8,527.74
  4. Step 4: Simplify right side
    18,915.18x = 242,084,630.35
  5. Step 5: Solve for x
    x = 242,084,630.35/18,915.18
  6. Step 6: Final answer
    x = 12,798.43

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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.