Home / 28,305.40-39,063.18-15,730.04

Finding the Fourth Proportional to 28,305.40, 39,063.18 and 15,730.04

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Solution

The fourth proportional to 28,305.40, 39,063.18 and 15,730.04 is: 21,708.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,305.40 : 39,063.18 = 15,730.04 : x
  2. Step 2: Convert to fraction form
    28,305.40/39,063.18 = 15,730.04/x
  3. Step 3: Cross multiply
    28,305.40x = 39,063.18 × 15,730.04
  4. Step 4: Simplify right side
    28,305.40x = 614,465,383.93
  5. Step 5: Solve for x
    x = 614,465,383.93/28,305.40
  6. Step 6: Final answer
    x = 21,708.42

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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.