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Finding the Fourth Proportional to 30,630.76, 45,928.92 and 10,630.95

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Solution

The fourth proportional to 30,630.76, 45,928.92 and 10,630.95 is: 15,940.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,630.76 : 45,928.92 = 10,630.95 : x
  2. Step 2: Convert to fraction form
    30,630.76/45,928.92 = 10,630.95/x
  3. Step 3: Cross multiply
    30,630.76x = 45,928.92 × 10,630.95
  4. Step 4: Simplify right side
    30,630.76x = 488,267,919.71
  5. Step 5: Solve for x
    x = 488,267,919.71/30,630.76
  6. Step 6: Final answer
    x = 15,940.45

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.