Home / 21,121.02-29,150.28-12,046.40

Finding the Fourth Proportional to 21,121.02, 29,150.28 and 12,046.40

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Solution

The fourth proportional to 21,121.02, 29,150.28 and 12,046.40 is: 16,625.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,121.02 : 29,150.28 = 12,046.40 : x
  2. Step 2: Convert to fraction form
    21,121.02/29,150.28 = 12,046.40/x
  3. Step 3: Cross multiply
    21,121.02x = 29,150.28 × 12,046.40
  4. Step 4: Simplify right side
    21,121.02x = 351,155,932.99
  5. Step 5: Solve for x
    x = 351,155,932.99/21,121.02
  6. Step 6: Final answer
    x = 16,625.90

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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.