Home / 21,317.78-29,417.46-11,884.52

Finding the Fourth Proportional to 21,317.78, 29,417.46 and 11,884.52

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Solution

The fourth proportional to 21,317.78, 29,417.46 and 11,884.52 is: 16,400.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,317.78 : 29,417.46 = 11,884.52 : x
  2. Step 2: Convert to fraction form
    21,317.78/29,417.46 = 11,884.52/x
  3. Step 3: Cross multiply
    21,317.78x = 29,417.46 × 11,884.52
  4. Step 4: Simplify right side
    21,317.78x = 349,612,391.72
  5. Step 5: Solve for x
    x = 349,612,391.72/21,317.78
  6. Step 6: Final answer
    x = 16,400.04

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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.