Home / 38,139.39-52,631.44-21,143.32

Finding the Fourth Proportional to 38,139.39, 52,631.44 and 21,143.32

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Solution

The fourth proportional to 38,139.39, 52,631.44 and 21,143.32 is: 29,177.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,139.39 : 52,631.44 = 21,143.32 : x
  2. Step 2: Convert to fraction form
    38,139.39/52,631.44 = 21,143.32/x
  3. Step 3: Cross multiply
    38,139.39x = 52,631.44 × 21,143.32
  4. Step 4: Simplify right side
    38,139.39x = 1,112,803,193.54
  5. Step 5: Solve for x
    x = 1,112,803,193.54/38,139.39
  6. Step 6: Final answer
    x = 29,177.27

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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.