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Finding the Fourth Proportional to 30,104.80, 45,164.40 and 14,509.60

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Solution

The fourth proportional to 30,104.80, 45,164.40 and 14,509.60 is: 21,767.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,104.80 : 45,164.40 = 14,509.60 : x
  2. Step 2: Convert to fraction form
    30,104.80/45,164.40 = 14,509.60/x
  3. Step 3: Cross multiply
    30,104.80x = 45,164.40 × 14,509.60
  4. Step 4: Simplify right side
    30,104.80x = 655,317,378.24
  5. Step 5: Solve for x
    x = 655,317,378.24/30,104.80
  6. Step 6: Final answer
    x = 21,767.87

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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.