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Finding the Fourth Proportional to 27,159.35, 40,744.35 and 13,129.07

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Solution

The fourth proportional to 27,159.35, 40,744.35 and 13,129.07 is: 19,696.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,159.35 : 40,744.35 = 13,129.07 : x
  2. Step 2: Convert to fraction form
    27,159.35/40,744.35 = 13,129.07/x
  3. Step 3: Cross multiply
    27,159.35x = 40,744.35 × 13,129.07
  4. Step 4: Simplify right side
    27,159.35x = 534,935,219.53
  5. Step 5: Solve for x
    x = 534,935,219.53/27,159.35
  6. Step 6: Final answer
    x = 19,696.18

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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.