Home / 11,103.68-15,322.56-6,630.40

Finding the Fourth Proportional to 11,103.68, 15,322.56 and 6,630.40

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Solution

The fourth proportional to 11,103.68, 15,322.56 and 6,630.40 is: 9,149.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,103.68 : 15,322.56 = 6,630.40 : x
  2. Step 2: Convert to fraction form
    11,103.68/15,322.56 = 6,630.40/x
  3. Step 3: Cross multiply
    11,103.68x = 15,322.56 × 6,630.40
  4. Step 4: Simplify right side
    11,103.68x = 101,594,701.82
  5. Step 5: Solve for x
    x = 101,594,701.82/11,103.68
  6. Step 6: Final answer
    x = 9,149.64

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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.