Home / 28,637.93-39,520.56-15,891.16

Finding the Fourth Proportional to 28,637.93, 39,520.56 and 15,891.16

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Solution

The fourth proportional to 28,637.93, 39,520.56 and 15,891.16 is: 21,929.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,637.93 : 39,520.56 = 15,891.16 : x
  2. Step 2: Convert to fraction form
    28,637.93/39,520.56 = 15,891.16/x
  3. Step 3: Cross multiply
    28,637.93x = 39,520.56 × 15,891.16
  4. Step 4: Simplify right side
    28,637.93x = 628,027,542.25
  5. Step 5: Solve for x
    x = 628,027,542.25/28,637.93
  6. Step 6: Final answer
    x = 21,929.92

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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.