Home / 20,264.88-30,430.94-12,522.90

Finding the Fourth Proportional to 20,264.88, 30,430.94 and 12,522.90

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Solution

The fourth proportional to 20,264.88, 30,430.94 and 12,522.90 is: 18,805.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,264.88 : 30,430.94 = 12,522.90 : x
  2. Step 2: Convert to fraction form
    20,264.88/30,430.94 = 12,522.90/x
  3. Step 3: Cross multiply
    20,264.88x = 30,430.94 × 12,522.90
  4. Step 4: Simplify right side
    20,264.88x = 381,083,618.53
  5. Step 5: Solve for x
    x = 381,083,618.53/20,264.88
  6. Step 6: Final answer
    x = 18,805.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.