Home / 27,643.58-38,149.18-15,708.94

Finding the Fourth Proportional to 27,643.58, 38,149.18 and 15,708.94

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Solution

The fourth proportional to 27,643.58, 38,149.18 and 15,708.94 is: 21,678.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,643.58 : 38,149.18 = 15,708.94 : x
  2. Step 2: Convert to fraction form
    27,643.58/38,149.18 = 15,708.94/x
  3. Step 3: Cross multiply
    27,643.58x = 38,149.18 × 15,708.94
  4. Step 4: Simplify right side
    27,643.58x = 599,283,179.67
  5. Step 5: Solve for x
    x = 599,283,179.67/27,643.58
  6. Step 6: Final answer
    x = 21,678.93

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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.