Home / 30,552.20-42,155-17,122.64

Finding the Fourth Proportional to 30,552.20, 42,155 and 17,122.64

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Solution

The fourth proportional to 30,552.20, 42,155 and 17,122.64 is: 23,625.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,552.20 : 42,155 = 17,122.64 : x
  2. Step 2: Convert to fraction form
    30,552.20/42,155 = 17,122.64/x
  3. Step 3: Cross multiply
    30,552.20x = 42,155 × 17,122.64
  4. Step 4: Simplify right side
    30,552.20x = 721,804,889.20
  5. Step 5: Solve for x
    x = 721,804,889.20/30,552.20
  6. Step 6: Final answer
    x = 23,625.30

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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.