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Finding the Fourth Proportional to 13,471.31, 18,589.95 and 7,502.67

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Solution

The fourth proportional to 13,471.31, 18,589.95 and 7,502.67 is: 10,353.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,471.31 : 18,589.95 = 7,502.67 : x
  2. Step 2: Convert to fraction form
    13,471.31/18,589.95 = 7,502.67/x
  3. Step 3: Cross multiply
    13,471.31x = 18,589.95 × 7,502.67
  4. Step 4: Simplify right side
    13,471.31x = 139,474,260.17
  5. Step 5: Solve for x
    x = 139,474,260.17/13,471.31
  6. Step 6: Final answer
    x = 10,353.43

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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.