Home / 28,548.20-39,395.70-15,801.91

Finding the Fourth Proportional to 28,548.20, 39,395.70 and 15,801.91

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Solution

The fourth proportional to 28,548.20, 39,395.70 and 15,801.91 is: 21,806.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,548.20 : 39,395.70 = 15,801.91 : x
  2. Step 2: Convert to fraction form
    28,548.20/39,395.70 = 15,801.91/x
  3. Step 3: Cross multiply
    28,548.20x = 39,395.70 × 15,801.91
  4. Step 4: Simplify right side
    28,548.20x = 622,527,305.79
  5. Step 5: Solve for x
    x = 622,527,305.79/28,548.20
  6. Step 6: Final answer
    x = 21,806.18

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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.