Home / 21,282.28-29,370.02-11,851.72

Finding the Fourth Proportional to 21,282.28, 29,370.02 and 11,851.72

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Solution

The fourth proportional to 21,282.28, 29,370.02 and 11,851.72 is: 16,355.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,282.28 : 29,370.02 = 11,851.72 : x
  2. Step 2: Convert to fraction form
    21,282.28/29,370.02 = 11,851.72/x
  3. Step 3: Cross multiply
    21,282.28x = 29,370.02 × 11,851.72
  4. Step 4: Simplify right side
    21,282.28x = 348,085,253.43
  5. Step 5: Solve for x
    x = 348,085,253.43/21,282.28
  6. Step 6: Final answer
    x = 16,355.64

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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.