Home / 15,742.80-21,727.44-11,959.76

Finding the Fourth Proportional to 15,742.80, 21,727.44 and 11,959.76

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Solution

The fourth proportional to 15,742.80, 21,727.44 and 11,959.76 is: 16,506.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,742.80 : 21,727.44 = 11,959.76 : x
  2. Step 2: Convert to fraction form
    15,742.80/21,727.44 = 11,959.76/x
  3. Step 3: Cross multiply
    15,742.80x = 21,727.44 × 11,959.76
  4. Step 4: Simplify right side
    15,742.80x = 259,854,967.81
  5. Step 5: Solve for x
    x = 259,854,967.81/15,742.80
  6. Step 6: Final answer
    x = 16,506.27

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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.