Home / 13,110.36-18,078.40-9,747.76

Finding the Fourth Proportional to 13,110.36, 18,078.40 and 9,747.76

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Solution

The fourth proportional to 13,110.36, 18,078.40 and 9,747.76 is: 13,441.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,110.36 : 18,078.40 = 9,747.76 : x
  2. Step 2: Convert to fraction form
    13,110.36/18,078.40 = 9,747.76/x
  3. Step 3: Cross multiply
    13,110.36x = 18,078.40 × 9,747.76
  4. Step 4: Simplify right side
    13,110.36x = 176,223,904.38
  5. Step 5: Solve for x
    x = 176,223,904.38/13,110.36
  6. Step 6: Final answer
    x = 13,441.58

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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.