Home / 27,820.68-38,396.24-15,723.68

Finding the Fourth Proportional to 27,820.68, 38,396.24 and 15,723.68

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Solution

The fourth proportional to 27,820.68, 38,396.24 and 15,723.68 is: 21,700.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,820.68 : 38,396.24 = 15,723.68 : x
  2. Step 2: Convert to fraction form
    27,820.68/38,396.24 = 15,723.68/x
  3. Step 3: Cross multiply
    27,820.68x = 38,396.24 × 15,723.68
  4. Step 4: Simplify right side
    27,820.68x = 603,729,920.36
  5. Step 5: Solve for x
    x = 603,729,920.36/27,820.68
  6. Step 6: Final answer
    x = 21,700.76

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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.