Home / 13,747.12-18,969.42-7,697.70

Finding the Fourth Proportional to 13,747.12, 18,969.42 and 7,697.70

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Solution

The fourth proportional to 13,747.12, 18,969.42 and 7,697.70 is: 10,621.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,747.12 : 18,969.42 = 7,697.70 : x
  2. Step 2: Convert to fraction form
    13,747.12/18,969.42 = 7,697.70/x
  3. Step 3: Cross multiply
    13,747.12x = 18,969.42 × 7,697.70
  4. Step 4: Simplify right side
    13,747.12x = 146,020,933.20
  5. Step 5: Solve for x
    x = 146,020,933.20/13,747.12
  6. Step 6: Final answer
    x = 10,621.93

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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.