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Finding the Fourth Proportional to 19,244.60, 28,871.10 and 10,928.60

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Solution

The fourth proportional to 19,244.60, 28,871.10 and 10,928.60 is: 16,395.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,244.60 : 28,871.10 = 10,928.60 : x
  2. Step 2: Convert to fraction form
    19,244.60/28,871.10 = 10,928.60/x
  3. Step 3: Cross multiply
    19,244.60x = 28,871.10 × 10,928.60
  4. Step 4: Simplify right side
    19,244.60x = 315,520,703.46
  5. Step 5: Solve for x
    x = 315,520,703.46/19,244.60
  6. Step 6: Final answer
    x = 16,395.29

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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.