Home / 20,322.28-30,360.29-12,867.04

Finding the Fourth Proportional to 20,322.28, 30,360.29 and 12,867.04

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Solution

The fourth proportional to 20,322.28, 30,360.29 and 12,867.04 is: 19,222.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,322.28 : 30,360.29 = 12,867.04 : x
  2. Step 2: Convert to fraction form
    20,322.28/30,360.29 = 12,867.04/x
  3. Step 3: Cross multiply
    20,322.28x = 30,360.29 × 12,867.04
  4. Step 4: Simplify right side
    20,322.28x = 390,647,065.84
  5. Step 5: Solve for x
    x = 390,647,065.84/20,322.28
  6. Step 6: Final answer
    x = 19,222.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.