Home / 12,928.88-17,840.56-7,263.20

Finding the Fourth Proportional to 12,928.88, 17,840.56 and 7,263.20

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Solution

The fourth proportional to 12,928.88, 17,840.56 and 7,263.20 is: 10,022.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,928.88 : 17,840.56 = 7,263.20 : x
  2. Step 2: Convert to fraction form
    12,928.88/17,840.56 = 7,263.20/x
  3. Step 3: Cross multiply
    12,928.88x = 17,840.56 × 7,263.20
  4. Step 4: Simplify right side
    12,928.88x = 129,579,555.39
  5. Step 5: Solve for x
    x = 129,579,555.39/12,928.88
  6. Step 6: Final answer
    x = 10,022.49

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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.