Home / 12,863.04-17,740.98-8,612.75

Finding the Fourth Proportional to 12,863.04, 17,740.98 and 8,612.75

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Solution

The fourth proportional to 12,863.04, 17,740.98 and 8,612.75 is: 11,878.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,863.04 : 17,740.98 = 8,612.75 : x
  2. Step 2: Convert to fraction form
    12,863.04/17,740.98 = 8,612.75/x
  3. Step 3: Cross multiply
    12,863.04x = 17,740.98 × 8,612.75
  4. Step 4: Simplify right side
    12,863.04x = 152,798,625.50
  5. Step 5: Solve for x
    x = 152,798,625.50/12,863.04
  6. Step 6: Final answer
    x = 11,878.89

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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.