Home / 30,532.20-42,138.34-17,958.12

Finding the Fourth Proportional to 30,532.20, 42,138.34 and 17,958.12

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Solution

The fourth proportional to 30,532.20, 42,138.34 and 17,958.12 is: 24,784.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,532.20 : 42,138.34 = 17,958.12 : x
  2. Step 2: Convert to fraction form
    30,532.20/42,138.34 = 17,958.12/x
  3. Step 3: Cross multiply
    30,532.20x = 42,138.34 × 17,958.12
  4. Step 4: Simplify right side
    30,532.20x = 756,725,366.32
  5. Step 5: Solve for x
    x = 756,725,366.32/30,532.20
  6. Step 6: Final answer
    x = 24,784.50

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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.