Home / 18,915.90-28,376.91-6,437.04

Finding the Fourth Proportional to 18,915.90, 28,376.91 and 6,437.04

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Solution

The fourth proportional to 18,915.90, 28,376.91 and 6,437.04 is: 9,656.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,915.90 : 28,376.91 = 6,437.04 : x
  2. Step 2: Convert to fraction form
    18,915.90/28,376.91 = 6,437.04/x
  3. Step 3: Cross multiply
    18,915.90x = 28,376.91 × 6,437.04
  4. Step 4: Simplify right side
    18,915.90x = 182,663,304.75
  5. Step 5: Solve for x
    x = 182,663,304.75/18,915.90
  6. Step 6: Final answer
    x = 9,656.60

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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.