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Finding the Fourth Proportional to 38,197.40, 52,711.02 and 21,202.40

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Solution

The fourth proportional to 38,197.40, 52,711.02 and 21,202.40 is: 29,258.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,197.40 : 52,711.02 = 21,202.40 : x
  2. Step 2: Convert to fraction form
    38,197.40/52,711.02 = 21,202.40/x
  3. Step 3: Cross multiply
    38,197.40x = 52,711.02 × 21,202.40
  4. Step 4: Simplify right side
    38,197.40x = 1,117,600,130.45
  5. Step 5: Solve for x
    x = 1,117,600,130.45/38,197.40
  6. Step 6: Final answer
    x = 29,258.54

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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.