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Finding the Fourth Proportional to 26,617.12, 39,931.58 and 7,898.65

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Solution

The fourth proportional to 26,617.12, 39,931.58 and 7,898.65 is: 11,849.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,617.12 : 39,931.58 = 7,898.65 : x
  2. Step 2: Convert to fraction form
    26,617.12/39,931.58 = 7,898.65/x
  3. Step 3: Cross multiply
    26,617.12x = 39,931.58 × 7,898.65
  4. Step 4: Simplify right side
    26,617.12x = 315,405,574.37
  5. Step 5: Solve for x
    x = 315,405,574.37/26,617.12
  6. Step 6: Final answer
    x = 11,849.73

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Double scale
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Similar ratio
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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.