Home / 28,422.68-39,223.55-15,676.35

Finding the Fourth Proportional to 28,422.68, 39,223.55 and 15,676.35

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Solution

The fourth proportional to 28,422.68, 39,223.55 and 15,676.35 is: 21,633.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,422.68 : 39,223.55 = 15,676.35 : x
  2. Step 2: Convert to fraction form
    28,422.68/39,223.55 = 15,676.35/x
  3. Step 3: Cross multiply
    28,422.68x = 39,223.55 × 15,676.35
  4. Step 4: Simplify right side
    28,422.68x = 614,882,019.66
  5. Step 5: Solve for x
    x = 614,882,019.66/28,422.68
  6. Step 6: Final answer
    x = 21,633.50

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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.