Home / 18,313.26-27,471.51-9,989.70

Finding the Fourth Proportional to 18,313.26, 27,471.51 and 9,989.70

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Solution

The fourth proportional to 18,313.26, 27,471.51 and 9,989.70 is: 14,985.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,313.26 : 27,471.51 = 9,989.70 : x
  2. Step 2: Convert to fraction form
    18,313.26/27,471.51 = 9,989.70/x
  3. Step 3: Cross multiply
    18,313.26x = 27,471.51 × 9,989.70
  4. Step 4: Simplify right side
    18,313.26x = 274,432,143.45
  5. Step 5: Solve for x
    x = 274,432,143.45/18,313.26
  6. Step 6: Final answer
    x = 14,985.43

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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.