Home / 12,330.87-17,019.81-7,612.43

Finding the Fourth Proportional to 12,330.87, 17,019.81 and 7,612.43

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Solution

The fourth proportional to 12,330.87, 17,019.81 and 7,612.43 is: 10,507.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,330.87 : 17,019.81 = 7,612.43 : x
  2. Step 2: Convert to fraction form
    12,330.87/17,019.81 = 7,612.43/x
  3. Step 3: Cross multiply
    12,330.87x = 17,019.81 × 7,612.43
  4. Step 4: Simplify right side
    12,330.87x = 129,562,027.14
  5. Step 5: Solve for x
    x = 129,562,027.14/12,330.87
  6. Step 6: Final answer
    x = 10,507.13

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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.