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Finding the Fourth Proportional to 27,612.90, 41,412.40 and 7,891.56

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Solution

The fourth proportional to 27,612.90, 41,412.40 and 7,891.56 is: 11,835.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,612.90 : 41,412.40 = 7,891.56 : x
  2. Step 2: Convert to fraction form
    27,612.90/41,412.40 = 7,891.56/x
  3. Step 3: Cross multiply
    27,612.90x = 41,412.40 × 7,891.56
  4. Step 4: Simplify right side
    27,612.90x = 326,808,439.34
  5. Step 5: Solve for x
    x = 326,808,439.34/27,612.90
  6. Step 6: Final answer
    x = 11,835.35

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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.