Home / 30,768.20-42,460.28-17,339.66

Finding the Fourth Proportional to 30,768.20, 42,460.28 and 17,339.66

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Solution

The fourth proportional to 30,768.20, 42,460.28 and 17,339.66 is: 23,928.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,768.20 : 42,460.28 = 17,339.66 : x
  2. Step 2: Convert to fraction form
    30,768.20/42,460.28 = 17,339.66/x
  3. Step 3: Cross multiply
    30,768.20x = 42,460.28 × 17,339.66
  4. Step 4: Simplify right side
    30,768.20x = 736,246,818.70
  5. Step 5: Solve for x
    x = 736,246,818.70/30,768.20
  6. Step 6: Final answer
    x = 23,928.82

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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.