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Finding the Fourth Proportional to 16,128.80, 24,212.40 and 9,114.40

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Solution

The fourth proportional to 16,128.80, 24,212.40 and 9,114.40 is: 13,682.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,128.80 : 24,212.40 = 9,114.40 : x
  2. Step 2: Convert to fraction form
    16,128.80/24,212.40 = 9,114.40/x
  3. Step 3: Cross multiply
    16,128.80x = 24,212.40 × 9,114.40
  4. Step 4: Simplify right side
    16,128.80x = 220,681,498.56
  5. Step 5: Solve for x
    x = 220,681,498.56/16,128.80
  6. Step 6: Final answer
    x = 13,682.45

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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.