Home / 9,427.11-13,009.56-5,178.57

Finding the Fourth Proportional to 9,427.11, 13,009.56 and 5,178.57

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Solution

The fourth proportional to 9,427.11, 13,009.56 and 5,178.57 is: 7,146.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,427.11 : 13,009.56 = 5,178.57 : x
  2. Step 2: Convert to fraction form
    9,427.11/13,009.56 = 5,178.57/x
  3. Step 3: Cross multiply
    9,427.11x = 13,009.56 × 5,178.57
  4. Step 4: Simplify right side
    9,427.11x = 67,370,917.13
  5. Step 5: Solve for x
    x = 67,370,917.13/9,427.11
  6. Step 6: Final answer
    x = 7,146.51

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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.