Home / 21,816.24-30,106.84-12,385.44

Finding the Fourth Proportional to 21,816.24, 30,106.84 and 12,385.44

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Solution

The fourth proportional to 21,816.24, 30,106.84 and 12,385.44 is: 17,092.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,816.24 : 30,106.84 = 12,385.44 : x
  2. Step 2: Convert to fraction form
    21,816.24/30,106.84 = 12,385.44/x
  3. Step 3: Cross multiply
    21,816.24x = 30,106.84 × 12,385.44
  4. Step 4: Simplify right side
    21,816.24x = 372,886,460.41
  5. Step 5: Solve for x
    x = 372,886,460.41/21,816.24
  6. Step 6: Final answer
    x = 17,092.15

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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.