Home / 10,878.47-15,012.27-6,629.55

Finding the Fourth Proportional to 10,878.47, 15,012.27 and 6,629.55

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Solution

The fourth proportional to 10,878.47, 15,012.27 and 6,629.55 is: 9,148.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,878.47 : 15,012.27 = 6,629.55 : x
  2. Step 2: Convert to fraction form
    10,878.47/15,012.27 = 6,629.55/x
  3. Step 3: Cross multiply
    10,878.47x = 15,012.27 × 6,629.55
  4. Step 4: Simplify right side
    10,878.47x = 99,524,594.58
  5. Step 5: Solve for x
    x = 99,524,594.58/10,878.47
  6. Step 6: Final answer
    x = 9,148.77

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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.