Home / 15,987.64-22,017-15,939.04

Finding the Fourth Proportional to 15,987.64, 22,017 and 15,939.04

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Solution

The fourth proportional to 15,987.64, 22,017 and 15,939.04 is: 21,950.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,987.64 : 22,017 = 15,939.04 : x
  2. Step 2: Convert to fraction form
    15,987.64/22,017 = 15,939.04/x
  3. Step 3: Cross multiply
    15,987.64x = 22,017 × 15,939.04
  4. Step 4: Simplify right side
    15,987.64x = 350,929,843.68
  5. Step 5: Solve for x
    x = 350,929,843.68/15,987.64
  6. Step 6: Final answer
    x = 21,950.07

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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.