Home / 11,154.27-15,392.73-6,438.45

Finding the Fourth Proportional to 11,154.27, 15,392.73 and 6,438.45

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Solution

The fourth proportional to 11,154.27, 15,392.73 and 6,438.45 is: 8,884.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,154.27 : 15,392.73 = 6,438.45 : x
  2. Step 2: Convert to fraction form
    11,154.27/15,392.73 = 6,438.45/x
  3. Step 3: Cross multiply
    11,154.27x = 15,392.73 × 6,438.45
  4. Step 4: Simplify right side
    11,154.27x = 99,105,322.47
  5. Step 5: Solve for x
    x = 99,105,322.47/11,154.27
  6. Step 6: Final answer
    x = 8,884.97

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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.