Home / 15,742.13-21,724.16-8,669.03

Finding the Fourth Proportional to 15,742.13, 21,724.16 and 8,669.03

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Solution

The fourth proportional to 15,742.13, 21,724.16 and 8,669.03 is: 11,963.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,742.13 : 21,724.16 = 8,669.03 : x
  2. Step 2: Convert to fraction form
    15,742.13/21,724.16 = 8,669.03/x
  3. Step 3: Cross multiply
    15,742.13x = 21,724.16 × 8,669.03
  4. Step 4: Simplify right side
    15,742.13x = 188,327,242.80
  5. Step 5: Solve for x
    x = 188,327,242.80/15,742.13
  6. Step 6: Final answer
    x = 11,963.27

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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.