Home / 13,856.86-19,121.23-8,553.39

Finding the Fourth Proportional to 13,856.86, 19,121.23 and 8,553.39

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Solution

The fourth proportional to 13,856.86, 19,121.23 and 8,553.39 is: 11,802.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,856.86 : 19,121.23 = 8,553.39 : x
  2. Step 2: Convert to fraction form
    13,856.86/19,121.23 = 8,553.39/x
  3. Step 3: Cross multiply
    13,856.86x = 19,121.23 × 8,553.39
  4. Step 4: Simplify right side
    13,856.86x = 163,551,337.47
  5. Step 5: Solve for x
    x = 163,551,337.47/13,856.86
  6. Step 6: Final answer
    x = 11,802.91

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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.