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Finding the Fourth Proportional to 28,033.70, 42,014.10 and 11,380.10

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Solution

The fourth proportional to 28,033.70, 42,014.10 and 11,380.10 is: 17,055.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,033.70 : 42,014.10 = 11,380.10 : x
  2. Step 2: Convert to fraction form
    28,033.70/42,014.10 = 11,380.10/x
  3. Step 3: Cross multiply
    28,033.70x = 42,014.10 × 11,380.10
  4. Step 4: Simplify right side
    28,033.70x = 478,124,659.41
  5. Step 5: Solve for x
    x = 478,124,659.41/28,033.70
  6. Step 6: Final answer
    x = 17,055.35

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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.