Home / 20,641.31-28,492.28-12,257.75

Finding the Fourth Proportional to 20,641.31, 28,492.28 and 12,257.75

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Solution

The fourth proportional to 20,641.31, 28,492.28 and 12,257.75 is: 16,920.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,641.31 : 28,492.28 = 12,257.75 : x
  2. Step 2: Convert to fraction form
    20,641.31/28,492.28 = 12,257.75/x
  3. Step 3: Cross multiply
    20,641.31x = 28,492.28 × 12,257.75
  4. Step 4: Simplify right side
    20,641.31x = 349,251,183.88
  5. Step 5: Solve for x
    x = 349,251,183.88/20,641.31
  6. Step 6: Final answer
    x = 16,920.01

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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.