Home / 12,569.78-18,838.95-6,331.37

Finding the Fourth Proportional to 12,569.78, 18,838.95 and 6,331.37

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Solution

The fourth proportional to 12,569.78, 18,838.95 and 6,331.37 is: 9,489.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,569.78 : 18,838.95 = 6,331.37 : x
  2. Step 2: Convert to fraction form
    12,569.78/18,838.95 = 6,331.37/x
  3. Step 3: Cross multiply
    12,569.78x = 18,838.95 × 6,331.37
  4. Step 4: Simplify right side
    12,569.78x = 119,276,298.35
  5. Step 5: Solve for x
    x = 119,276,298.35/12,569.78
  6. Step 6: Final answer
    x = 9,489.13

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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.