Home / 15,742.48-21,687.66-10,954.20

Finding the Fourth Proportional to 15,742.48, 21,687.66 and 10,954.20

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Solution

The fourth proportional to 15,742.48, 21,687.66 and 10,954.20 is: 15,091.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,742.48 : 21,687.66 = 10,954.20 : x
  2. Step 2: Convert to fraction form
    15,742.48/21,687.66 = 10,954.20/x
  3. Step 3: Cross multiply
    15,742.48x = 21,687.66 × 10,954.20
  4. Step 4: Simplify right side
    15,742.48x = 237,570,924.66
  5. Step 5: Solve for x
    x = 237,570,924.66/15,742.48
  6. Step 6: Final answer
    x = 15,091.07

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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.