Home / 27,642.64-38,146.52-15,705.72

Finding the Fourth Proportional to 27,642.64, 38,146.52 and 15,705.72

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Solution

The fourth proportional to 27,642.64, 38,146.52 and 15,705.72 is: 21,673.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,642.64 : 38,146.52 = 15,705.72 : x
  2. Step 2: Convert to fraction form
    27,642.64/38,146.52 = 15,705.72/x
  3. Step 3: Cross multiply
    27,642.64x = 38,146.52 × 15,705.72
  4. Step 4: Simplify right side
    27,642.64x = 599,118,562.09
  5. Step 5: Solve for x
    x = 599,118,562.09/27,642.64
  6. Step 6: Final answer
    x = 21,673.71

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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.