Home / 27,639.81-38,142.97-15,064.56

Finding the Fourth Proportional to 27,639.81, 38,142.97 and 15,064.56

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Solution

The fourth proportional to 27,639.81, 38,142.97 and 15,064.56 is: 20,789.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,639.81 : 38,142.97 = 15,064.56 : x
  2. Step 2: Convert to fraction form
    27,639.81/38,142.97 = 15,064.56/x
  3. Step 3: Cross multiply
    27,639.81x = 38,142.97 × 15,064.56
  4. Step 4: Simplify right side
    27,639.81x = 574,607,060.14
  5. Step 5: Solve for x
    x = 574,607,060.14/27,639.81
  6. Step 6: Final answer
    x = 20,789.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.