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Finding the Fourth Proportional to 13,437.56, 18,541.76 and 7,469.21

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Solution

The fourth proportional to 13,437.56, 18,541.76 and 7,469.21 is: 10,306.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,437.56 : 18,541.76 = 7,469.21 : x
  2. Step 2: Convert to fraction form
    13,437.56/18,541.76 = 7,469.21/x
  3. Step 3: Cross multiply
    13,437.56x = 18,541.76 × 7,469.21
  4. Step 4: Simplify right side
    13,437.56x = 138,492,169.15
  5. Step 5: Solve for x
    x = 138,492,169.15/13,437.56
  6. Step 6: Final answer
    x = 10,306.35

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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.