Home / 30,768.90-42,460.20-17,339.92

Finding the Fourth Proportional to 30,768.90, 42,460.20 and 17,339.92

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Solution

The fourth proportional to 30,768.90, 42,460.20 and 17,339.92 is: 23,928.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,768.90 : 42,460.20 = 17,339.92 : x
  2. Step 2: Convert to fraction form
    30,768.90/42,460.20 = 17,339.92/x
  3. Step 3: Cross multiply
    30,768.90x = 42,460.20 × 17,339.92
  4. Step 4: Simplify right side
    30,768.90x = 736,256,471.18
  5. Step 5: Solve for x
    x = 736,256,471.18/30,768.90
  6. Step 6: Final answer
    x = 23,928.59

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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.