Home / 28,062.15-38,725.98-15,315.43

Finding the Fourth Proportional to 28,062.15, 38,725.98 and 15,315.43

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Solution

The fourth proportional to 28,062.15, 38,725.98 and 15,315.43 is: 21,135.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,062.15 : 38,725.98 = 15,315.43 : x
  2. Step 2: Convert to fraction form
    28,062.15/38,725.98 = 15,315.43/x
  3. Step 3: Cross multiply
    28,062.15x = 38,725.98 × 15,315.43
  4. Step 4: Simplify right side
    28,062.15x = 593,105,035.87
  5. Step 5: Solve for x
    x = 593,105,035.87/28,062.15
  6. Step 6: Final answer
    x = 21,135.41

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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.