Home / 13,203.08-18,219.71-7,894.76

Finding the Fourth Proportional to 13,203.08, 18,219.71 and 7,894.76

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Solution

The fourth proportional to 13,203.08, 18,219.71 and 7,894.76 is: 10,894.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,203.08 : 18,219.71 = 7,894.76 : x
  2. Step 2: Convert to fraction form
    13,203.08/18,219.71 = 7,894.76/x
  3. Step 3: Cross multiply
    13,203.08x = 18,219.71 × 7,894.76
  4. Step 4: Simplify right side
    13,203.08x = 143,840,237.72
  5. Step 5: Solve for x
    x = 143,840,237.72/13,203.08
  6. Step 6: Final answer
    x = 10,894.45

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Half scale
Find fourth proportional to 26,406.16, 36,439.42 and 15,789.52
Double scale
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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.