Home / 15,911.22-21,962.63-11,447.95

Finding the Fourth Proportional to 15,911.22, 21,962.63 and 11,447.95

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Solution

The fourth proportional to 15,911.22, 21,962.63 and 11,447.95 is: 15,801.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,911.22 : 21,962.63 = 11,447.95 : x
  2. Step 2: Convert to fraction form
    15,911.22/21,962.63 = 11,447.95/x
  3. Step 3: Cross multiply
    15,911.22x = 21,962.63 × 11,447.95
  4. Step 4: Simplify right side
    15,911.22x = 251,427,090.11
  5. Step 5: Solve for x
    x = 251,427,090.11/15,911.22
  6. Step 6: Final answer
    x = 15,801.87

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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.