Home / 27,643.12-38,149.20-15,706.48

Finding the Fourth Proportional to 27,643.12, 38,149.20 and 15,706.48

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Solution

The fourth proportional to 27,643.12, 38,149.20 and 15,706.48 is: 21,675.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,643.12 : 38,149.20 = 15,706.48 : x
  2. Step 2: Convert to fraction form
    27,643.12/38,149.20 = 15,706.48/x
  3. Step 3: Cross multiply
    27,643.12x = 38,149.20 × 15,706.48
  4. Step 4: Simplify right side
    27,643.12x = 599,189,646.82
  5. Step 5: Solve for x
    x = 599,189,646.82/27,643.12
  6. Step 6: Final answer
    x = 21,675.91

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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.