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Finding the Fourth Proportional to 30,480.45, 45,720.68 and 14,928.45

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Solution

The fourth proportional to 30,480.45, 45,720.68 and 14,928.45 is: 22,392.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,480.45 : 45,720.68 = 14,928.45 : x
  2. Step 2: Convert to fraction form
    30,480.45/45,720.68 = 14,928.45/x
  3. Step 3: Cross multiply
    30,480.45x = 45,720.68 × 14,928.45
  4. Step 4: Simplify right side
    30,480.45x = 682,538,810.70
  5. Step 5: Solve for x
    x = 682,538,810.70/30,480.45
  6. Step 6: Final answer
    x = 22,392.68

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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.