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Finding the Fourth Proportional to 38,388, 52,993.20 and 27,066.72

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Solution

The fourth proportional to 38,388, 52,993.20 and 27,066.72 is: 37,364.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,388 : 52,993.20 = 27,066.72 : x
  2. Step 2: Convert to fraction form
    38,388/52,993.20 = 27,066.72/x
  3. Step 3: Cross multiply
    38,388x = 52,993.20 × 27,066.72
  4. Step 4: Simplify right side
    38,388x = 1,434,352,106.30
  5. Step 5: Solve for x
    x = 1,434,352,106.30/38,388
  6. Step 6: Final answer
    x = 37,364.60

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Double scale
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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.