Home / 22,078.95-30,458.24-13,120.11

Finding the Fourth Proportional to 22,078.95, 30,458.24 and 13,120.11

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Solution

The fourth proportional to 22,078.95, 30,458.24 and 13,120.11 is: 18,099.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,078.95 : 30,458.24 = 13,120.11 : x
  2. Step 2: Convert to fraction form
    22,078.95/30,458.24 = 13,120.11/x
  3. Step 3: Cross multiply
    22,078.95x = 30,458.24 × 13,120.11
  4. Step 4: Simplify right side
    22,078.95x = 399,615,442.81
  5. Step 5: Solve for x
    x = 399,615,442.81/22,078.95
  6. Step 6: Final answer
    x = 18,099.39

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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.