Home / 11,138.41-15,382.83-7,569.28

Finding the Fourth Proportional to 11,138.41, 15,382.83 and 7,569.28

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Solution

The fourth proportional to 11,138.41, 15,382.83 and 7,569.28 is: 10,453.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,138.41 : 15,382.83 = 7,569.28 : x
  2. Step 2: Convert to fraction form
    11,138.41/15,382.83 = 7,569.28/x
  3. Step 3: Cross multiply
    11,138.41x = 15,382.83 × 7,569.28
  4. Step 4: Simplify right side
    11,138.41x = 116,436,947.46
  5. Step 5: Solve for x
    x = 116,436,947.46/11,138.41
  6. Step 6: Final answer
    x = 10,453.64

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Half scale
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Double scale
Find fourth proportional to 11,139.41, 15,384.21 and 7,570.28
Similar ratio
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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.