Home / 28,209.18-38,928.69-15,633.93

Finding the Fourth Proportional to 28,209.18, 38,928.69 and 15,633.93

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Solution

The fourth proportional to 28,209.18, 38,928.69 and 15,633.93 is: 21,574.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,209.18 : 38,928.69 = 15,633.93 : x
  2. Step 2: Convert to fraction form
    28,209.18/38,928.69 = 15,633.93/x
  3. Step 3: Cross multiply
    28,209.18x = 38,928.69 × 15,633.93
  4. Step 4: Simplify right side
    28,209.18x = 608,608,414.45
  5. Step 5: Solve for x
    x = 608,608,414.45/28,209.18
  6. Step 6: Final answer
    x = 21,574.84

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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.