Home / 21,303.78-29,399.22-11,874.18

Finding the Fourth Proportional to 21,303.78, 29,399.22 and 11,874.18

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Solution

The fourth proportional to 21,303.78, 29,399.22 and 11,874.18 is: 16,386.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,303.78 : 29,399.22 = 11,874.18 : x
  2. Step 2: Convert to fraction form
    21,303.78/29,399.22 = 11,874.18/x
  3. Step 3: Cross multiply
    21,303.78x = 29,399.22 × 11,874.18
  4. Step 4: Simplify right side
    21,303.78x = 349,091,630.14
  5. Step 5: Solve for x
    x = 349,091,630.14/21,303.78
  6. Step 6: Final answer
    x = 16,386.37

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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.