Home / 21,552.19-29,742.02-12,120.75

Finding the Fourth Proportional to 21,552.19, 29,742.02 and 12,120.75

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Solution

The fourth proportional to 21,552.19, 29,742.02 and 12,120.75 is: 16,726.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,552.19 : 29,742.02 = 12,120.75 : x
  2. Step 2: Convert to fraction form
    21,552.19/29,742.02 = 12,120.75/x
  3. Step 3: Cross multiply
    21,552.19x = 29,742.02 × 12,120.75
  4. Step 4: Simplify right side
    21,552.19x = 360,495,619.22
  5. Step 5: Solve for x
    x = 360,495,619.22/21,552.19
  6. Step 6: Final answer
    x = 16,726.64

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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.