Home / 12,964.16-19,443.36-5,170.88

Finding the Fourth Proportional to 12,964.16, 19,443.36 and 5,170.88

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Solution

The fourth proportional to 12,964.16, 19,443.36 and 5,170.88 is: 7,755.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,964.16 : 19,443.36 = 5,170.88 : x
  2. Step 2: Convert to fraction form
    12,964.16/19,443.36 = 5,170.88/x
  3. Step 3: Cross multiply
    12,964.16x = 19,443.36 × 5,170.88
  4. Step 4: Simplify right side
    12,964.16x = 100,539,281.36
  5. Step 5: Solve for x
    x = 100,539,281.36/12,964.16
  6. Step 6: Final answer
    x = 7,755.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.