Home / 16,770.56-23,139.84-9,318.40

Finding the Fourth Proportional to 16,770.56, 23,139.84 and 9,318.40

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Solution

The fourth proportional to 16,770.56, 23,139.84 and 9,318.40 is: 12,857.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,770.56 : 23,139.84 = 9,318.40 : x
  2. Step 2: Convert to fraction form
    16,770.56/23,139.84 = 9,318.40/x
  3. Step 3: Cross multiply
    16,770.56x = 23,139.84 × 9,318.40
  4. Step 4: Simplify right side
    16,770.56x = 215,626,285.06
  5. Step 5: Solve for x
    x = 215,626,285.06/16,770.56
  6. Step 6: Final answer
    x = 12,857.43

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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.