Home / 12,712.19-19,071.03-5,215.76

Finding the Fourth Proportional to 12,712.19, 19,071.03 and 5,215.76

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Solution

The fourth proportional to 12,712.19, 19,071.03 and 5,215.76 is: 7,824.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,712.19 : 19,071.03 = 5,215.76 : x
  2. Step 2: Convert to fraction form
    12,712.19/19,071.03 = 5,215.76/x
  3. Step 3: Cross multiply
    12,712.19x = 19,071.03 × 5,215.76
  4. Step 4: Simplify right side
    12,712.19x = 99,469,963.11
  5. Step 5: Solve for x
    x = 99,469,963.11/12,712.19
  6. Step 6: Final answer
    x = 7,824.77

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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.