Home / 14,805.74-20,431.31-8,759.90

Finding the Fourth Proportional to 14,805.74, 20,431.31 and 8,759.90

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Solution

The fourth proportional to 14,805.74, 20,431.31 and 8,759.90 is: 12,088.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,805.74 : 20,431.31 = 8,759.90 : x
  2. Step 2: Convert to fraction form
    14,805.74/20,431.31 = 8,759.90/x
  3. Step 3: Cross multiply
    14,805.74x = 20,431.31 × 8,759.90
  4. Step 4: Simplify right side
    14,805.74x = 178,976,232.47
  5. Step 5: Solve for x
    x = 178,976,232.47/14,805.74
  6. Step 6: Final answer
    x = 12,088.30

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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.