Home / 22,280.12-30,745.39-12,719.63

Finding the Fourth Proportional to 22,280.12, 30,745.39 and 12,719.63

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Solution

The fourth proportional to 22,280.12, 30,745.39 and 12,719.63 is: 17,552.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,280.12 : 30,745.39 = 12,719.63 : x
  2. Step 2: Convert to fraction form
    22,280.12/30,745.39 = 12,719.63/x
  3. Step 3: Cross multiply
    22,280.12x = 30,745.39 × 12,719.63
  4. Step 4: Simplify right side
    22,280.12x = 391,069,985.01
  5. Step 5: Solve for x
    x = 391,069,985.01/22,280.12
  6. Step 6: Final answer
    x = 17,552.42

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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.