Home / 21,330.16-29,435.69-11,899.33

Finding the Fourth Proportional to 21,330.16, 29,435.69 and 11,899.33

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Solution

The fourth proportional to 21,330.16, 29,435.69 and 11,899.33 is: 16,421.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,330.16 : 29,435.69 = 11,899.33 : x
  2. Step 2: Convert to fraction form
    21,330.16/29,435.69 = 11,899.33/x
  3. Step 3: Cross multiply
    21,330.16x = 29,435.69 × 11,899.33
  4. Step 4: Simplify right side
    21,330.16x = 350,264,989.09
  5. Step 5: Solve for x
    x = 350,264,989.09/21,330.16
  6. Step 6: Final answer
    x = 16,421.11

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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.