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Finding the Fourth Proportional to 38,374.51, 52,956.02 and 21,378.73

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Solution

The fourth proportional to 38,374.51, 52,956.02 and 21,378.73 is: 29,502.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,374.51 : 52,956.02 = 21,378.73 : x
  2. Step 2: Convert to fraction form
    38,374.51/52,956.02 = 21,378.73/x
  3. Step 3: Cross multiply
    38,374.51x = 52,956.02 × 21,378.73
  4. Step 4: Simplify right side
    38,374.51x = 1,132,132,453.45
  5. Step 5: Solve for x
    x = 1,132,132,453.45/38,374.51
  6. Step 6: Final answer
    x = 29,502.20

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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.