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Finding the Fourth Proportional to 15,980.96, 23,934.72 and 8,945.40

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Solution

The fourth proportional to 15,980.96, 23,934.72 and 8,945.40 is: 13,397.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,980.96 : 23,934.72 = 8,945.40 : x
  2. Step 2: Convert to fraction form
    15,980.96/23,934.72 = 8,945.40/x
  3. Step 3: Cross multiply
    15,980.96x = 23,934.72 × 8,945.40
  4. Step 4: Simplify right side
    15,980.96x = 214,105,644.29
  5. Step 5: Solve for x
    x = 214,105,644.29/15,980.96
  6. Step 6: Final answer
    x = 13,397.55

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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.