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Finding the Fourth Proportional to 15,191.61, 22,779.51 and 6,867.64

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Solution

The fourth proportional to 15,191.61, 22,779.51 and 6,867.64 is: 10,297.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,191.61 : 22,779.51 = 6,867.64 : x
  2. Step 2: Convert to fraction form
    15,191.61/22,779.51 = 6,867.64/x
  3. Step 3: Cross multiply
    15,191.61x = 22,779.51 × 6,867.64
  4. Step 4: Simplify right side
    15,191.61x = 156,441,474.06
  5. Step 5: Solve for x
    x = 156,441,474.06/15,191.61
  6. Step 6: Final answer
    x = 10,297.89

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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.