Home / 30,719.52-42,393.51-18,144.27

Finding the Fourth Proportional to 30,719.52, 42,393.51 and 18,144.27

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Solution

The fourth proportional to 30,719.52, 42,393.51 and 18,144.27 is: 25,039.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,719.52 : 42,393.51 = 18,144.27 : x
  2. Step 2: Convert to fraction form
    30,719.52/42,393.51 = 18,144.27/x
  3. Step 3: Cross multiply
    30,719.52x = 42,393.51 × 18,144.27
  4. Step 4: Simplify right side
    30,719.52x = 769,199,291.69
  5. Step 5: Solve for x
    x = 769,199,291.69/30,719.52
  6. Step 6: Final answer
    x = 25,039.43

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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.