Home / 28,383.57-39,168.84-15,637.95

Finding the Fourth Proportional to 28,383.57, 39,168.84 and 15,637.95

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Solution

The fourth proportional to 28,383.57, 39,168.84 and 15,637.95 is: 21,580.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,383.57 : 39,168.84 = 15,637.95 : x
  2. Step 2: Convert to fraction form
    28,383.57/39,168.84 = 15,637.95/x
  3. Step 3: Cross multiply
    28,383.57x = 39,168.84 × 15,637.95
  4. Step 4: Simplify right side
    28,383.57x = 612,520,361.48
  5. Step 5: Solve for x
    x = 612,520,361.48/28,383.57
  6. Step 6: Final answer
    x = 21,580.10

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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.