Home / 12,729.95-17,570.58-7,425.56

Finding the Fourth Proportional to 12,729.95, 17,570.58 and 7,425.56

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Solution

The fourth proportional to 12,729.95, 17,570.58 and 7,425.56 is: 10,249.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,729.95 : 17,570.58 = 7,425.56 : x
  2. Step 2: Convert to fraction form
    12,729.95/17,570.58 = 7,425.56/x
  3. Step 3: Cross multiply
    12,729.95x = 17,570.58 × 7,425.56
  4. Step 4: Simplify right side
    12,729.95x = 130,471,396.02
  5. Step 5: Solve for x
    x = 130,471,396.02/12,729.95
  6. Step 6: Final answer
    x = 10,249.17

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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.