Home / 12,121.48-16,726.28-6,816.18

Finding the Fourth Proportional to 12,121.48, 16,726.28 and 6,816.18

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Solution

The fourth proportional to 12,121.48, 16,726.28 and 6,816.18 is: 9,405.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,121.48 : 16,726.28 = 6,816.18 : x
  2. Step 2: Convert to fraction form
    12,121.48/16,726.28 = 6,816.18/x
  3. Step 3: Cross multiply
    12,121.48x = 16,726.28 × 6,816.18
  4. Step 4: Simplify right side
    12,121.48x = 114,009,335.21
  5. Step 5: Solve for x
    x = 114,009,335.21/12,121.48
  6. Step 6: Final answer
    x = 9,405.56

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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.