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Finding the Fourth Proportional to 19,158.72, 28,746.72 and 8,773.44

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Solution

The fourth proportional to 19,158.72, 28,746.72 and 8,773.44 is: 13,164.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,158.72 : 28,746.72 = 8,773.44 : x
  2. Step 2: Convert to fraction form
    19,158.72/28,746.72 = 8,773.44/x
  3. Step 3: Cross multiply
    19,158.72x = 28,746.72 × 8,773.44
  4. Step 4: Simplify right side
    19,158.72x = 252,207,623.12
  5. Step 5: Solve for x
    x = 252,207,623.12/19,158.72
  6. Step 6: Final answer
    x = 13,164.12

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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.