Home / 27,656.90-38,168.79-15,723.98

Finding the Fourth Proportional to 27,656.90, 38,168.79 and 15,723.98

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Solution

The fourth proportional to 27,656.90, 38,168.79 and 15,723.98 is: 21,700.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,656.90 : 38,168.79 = 15,723.98 : x
  2. Step 2: Convert to fraction form
    27,656.90/38,168.79 = 15,723.98/x
  3. Step 3: Cross multiply
    27,656.90x = 38,168.79 × 15,723.98
  4. Step 4: Simplify right side
    27,656.90x = 600,165,290.58
  5. Step 5: Solve for x
    x = 600,165,290.58/27,656.90
  6. Step 6: Final answer
    x = 21,700.38

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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.