Home / 19,378.39-29,187.28-18,445.27

Finding the Fourth Proportional to 19,378.39, 29,187.28 and 18,445.27

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Solution

The fourth proportional to 19,378.39, 29,187.28 and 18,445.27 is: 27,781.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,378.39 : 29,187.28 = 18,445.27 : x
  2. Step 2: Convert to fraction form
    19,378.39/29,187.28 = 18,445.27/x
  3. Step 3: Cross multiply
    19,378.39x = 29,187.28 × 18,445.27
  4. Step 4: Simplify right side
    19,378.39x = 538,367,260.17
  5. Step 5: Solve for x
    x = 538,367,260.17/19,378.39
  6. Step 6: Final answer
    x = 27,781.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.