Home / 15,381.54-21,234.69-12,323.39

Finding the Fourth Proportional to 15,381.54, 21,234.69 and 12,323.39

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Solution

The fourth proportional to 15,381.54, 21,234.69 and 12,323.39 is: 17,012.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,381.54 : 21,234.69 = 12,323.39 : x
  2. Step 2: Convert to fraction form
    15,381.54/21,234.69 = 12,323.39/x
  3. Step 3: Cross multiply
    15,381.54x = 21,234.69 × 12,323.39
  4. Step 4: Simplify right side
    15,381.54x = 261,683,260.23
  5. Step 5: Solve for x
    x = 261,683,260.23/15,381.54
  6. Step 6: Final answer
    x = 17,012.81

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Half scale
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Double scale
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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.