Home / 11,419.02-15,747.75-7,438.68

Finding the Fourth Proportional to 11,419.02, 15,747.75 and 7,438.68

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Solution

The fourth proportional to 11,419.02, 15,747.75 and 7,438.68 is: 10,258.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,419.02 : 15,747.75 = 7,438.68 : x
  2. Step 2: Convert to fraction form
    11,419.02/15,747.75 = 7,438.68/x
  3. Step 3: Cross multiply
    11,419.02x = 15,747.75 × 7,438.68
  4. Step 4: Simplify right side
    11,419.02x = 117,142,472.97
  5. Step 5: Solve for x
    x = 117,142,472.97/11,419.02
  6. Step 6: Final answer
    x = 10,258.54

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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.