Home / 15,529.44-21,436.80-10,816.32

Finding the Fourth Proportional to 15,529.44, 21,436.80 and 10,816.32

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Solution

The fourth proportional to 15,529.44, 21,436.80 and 10,816.32 is: 14,930.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,529.44 : 21,436.80 = 10,816.32 : x
  2. Step 2: Convert to fraction form
    15,529.44/21,436.80 = 10,816.32/x
  3. Step 3: Cross multiply
    15,529.44x = 21,436.80 × 10,816.32
  4. Step 4: Simplify right side
    15,529.44x = 231,867,288.58
  5. Step 5: Solve for x
    x = 231,867,288.58/15,529.44
  6. Step 6: Final answer
    x = 14,930.82

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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.