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Finding the Fourth Proportional to 38,313, 57,428.60 and 18,548.19

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Solution

The fourth proportional to 38,313, 57,428.60 and 18,548.19 is: 27,802.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,313 : 57,428.60 = 18,548.19 : x
  2. Step 2: Convert to fraction form
    38,313/57,428.60 = 18,548.19/x
  3. Step 3: Cross multiply
    38,313x = 57,428.60 × 18,548.19
  4. Step 4: Simplify right side
    38,313x = 1,065,196,491.49
  5. Step 5: Solve for x
    x = 1,065,196,491.49/38,313
  6. Step 6: Final answer
    x = 27,802.48

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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.