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Finding the Fourth Proportional to 38,334.40, 57,436.80 and 18,570.40

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Solution

The fourth proportional to 38,334.40, 57,436.80 and 18,570.40 is: 27,824.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,334.40 : 57,436.80 = 18,570.40 : x
  2. Step 2: Convert to fraction form
    38,334.40/57,436.80 = 18,570.40/x
  3. Step 3: Cross multiply
    38,334.40x = 57,436.80 × 18,570.40
  4. Step 4: Simplify right side
    38,334.40x = 1,066,624,350.72
  5. Step 5: Solve for x
    x = 1,066,624,350.72/38,334.40
  6. Step 6: Final answer
    x = 27,824.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.