Home / 21,360.80-29,475.04-11,927.68

Finding the Fourth Proportional to 21,360.80, 29,475.04 and 11,927.68

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Solution

The fourth proportional to 21,360.80, 29,475.04 and 11,927.68 is: 16,458.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,360.80 : 29,475.04 = 11,927.68 : x
  2. Step 2: Convert to fraction form
    21,360.80/29,475.04 = 11,927.68/x
  3. Step 3: Cross multiply
    21,360.80x = 29,475.04 × 11,927.68
  4. Step 4: Simplify right side
    21,360.80x = 351,568,845.11
  5. Step 5: Solve for x
    x = 351,568,845.11/21,360.80
  6. Step 6: Final answer
    x = 16,458.60

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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.