Home / 15,384.29-21,231.32-11,600.78

Finding the Fourth Proportional to 15,384.29, 21,231.32 and 11,600.78

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Solution

The fourth proportional to 15,384.29, 21,231.32 and 11,600.78 is: 16,009.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,384.29 : 21,231.32 = 11,600.78 : x
  2. Step 2: Convert to fraction form
    15,384.29/21,231.32 = 11,600.78/x
  3. Step 3: Cross multiply
    15,384.29x = 21,231.32 × 11,600.78
  4. Step 4: Simplify right side
    15,384.29x = 246,299,708.27
  5. Step 5: Solve for x
    x = 246,299,708.27/15,384.29
  6. Step 6: Final answer
    x = 16,009.82

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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.