Home / 30,867.39-42,591.56-18,122.04

Finding the Fourth Proportional to 30,867.39, 42,591.56 and 18,122.04

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Solution

The fourth proportional to 30,867.39, 42,591.56 and 18,122.04 is: 25,005.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,867.39 : 42,591.56 = 18,122.04 : x
  2. Step 2: Convert to fraction form
    30,867.39/42,591.56 = 18,122.04/x
  3. Step 3: Cross multiply
    30,867.39x = 42,591.56 × 18,122.04
  4. Step 4: Simplify right side
    30,867.39x = 771,845,863.37
  5. Step 5: Solve for x
    x = 771,845,863.37/30,867.39
  6. Step 6: Final answer
    x = 25,005.22

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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.