Home / 12,889.15-19,300.91-8,493.28

Finding the Fourth Proportional to 12,889.15, 19,300.91 and 8,493.28

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Solution

The fourth proportional to 12,889.15, 19,300.91 and 8,493.28 is: 12,718.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,889.15 : 19,300.91 = 8,493.28 : x
  2. Step 2: Convert to fraction form
    12,889.15/19,300.91 = 8,493.28/x
  3. Step 3: Cross multiply
    12,889.15x = 19,300.91 × 8,493.28
  4. Step 4: Simplify right side
    12,889.15x = 163,927,942.17
  5. Step 5: Solve for x
    x = 163,927,942.17/12,889.15
  6. Step 6: Final answer
    x = 12,718.29

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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.