Home / 21,646.22-29,851.08-13,149.74

Finding the Fourth Proportional to 21,646.22, 29,851.08 and 13,149.74

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Solution

The fourth proportional to 21,646.22, 29,851.08 and 13,149.74 is: 18,134.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,646.22 : 29,851.08 = 13,149.74 : x
  2. Step 2: Convert to fraction form
    21,646.22/29,851.08 = 13,149.74/x
  3. Step 3: Cross multiply
    21,646.22x = 29,851.08 × 13,149.74
  4. Step 4: Simplify right side
    21,646.22x = 392,533,940.72
  5. Step 5: Solve for x
    x = 392,533,940.72/21,646.22
  6. Step 6: Final answer
    x = 18,134.06

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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.