Home / 21,274.11-31,851.15-11,256.18

Finding the Fourth Proportional to 21,274.11, 31,851.15 and 11,256.18

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Solution

The fourth proportional to 21,274.11, 31,851.15 and 11,256.18 is: 16,852.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,274.11 : 31,851.15 = 11,256.18 : x
  2. Step 2: Convert to fraction form
    21,274.11/31,851.15 = 11,256.18/x
  3. Step 3: Cross multiply
    21,274.11x = 31,851.15 × 11,256.18
  4. Step 4: Simplify right side
    21,274.11x = 358,522,277.61
  5. Step 5: Solve for x
    x = 358,522,277.61/21,274.11
  6. Step 6: Final answer
    x = 16,852.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.