Home / 10,878.97-15,012.96-6,630.05

Finding the Fourth Proportional to 10,878.97, 15,012.96 and 6,630.05

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Solution

The fourth proportional to 10,878.97, 15,012.96 and 6,630.05 is: 9,149.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,878.97 : 15,012.96 = 6,630.05 : x
  2. Step 2: Convert to fraction form
    10,878.97/15,012.96 = 6,630.05/x
  3. Step 3: Cross multiply
    10,878.97x = 15,012.96 × 6,630.05
  4. Step 4: Simplify right side
    10,878.97x = 99,536,675.45
  5. Step 5: Solve for x
    x = 99,536,675.45/10,878.97
  6. Step 6: Final answer
    x = 9,149.46

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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.