Home / 21,222.02-29,249.31-15,544.70

Finding the Fourth Proportional to 21,222.02, 29,249.31 and 15,544.70

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Solution

The fourth proportional to 21,222.02, 29,249.31 and 15,544.70 is: 21,424.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,222.02 : 29,249.31 = 15,544.70 : x
  2. Step 2: Convert to fraction form
    21,222.02/29,249.31 = 15,544.70/x
  3. Step 3: Cross multiply
    21,222.02x = 29,249.31 × 15,544.70
  4. Step 4: Simplify right side
    21,222.02x = 454,671,822.28
  5. Step 5: Solve for x
    x = 454,671,822.28/21,222.02
  6. Step 6: Final answer
    x = 21,424.54

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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.