Home / 28,276.60-42,366.30-18,410.80

Finding the Fourth Proportional to 28,276.60, 42,366.30 and 18,410.80

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Solution

The fourth proportional to 28,276.60, 42,366.30 and 18,410.80 is: 27,584.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,276.60 : 42,366.30 = 18,410.80 : x
  2. Step 2: Convert to fraction form
    28,276.60/42,366.30 = 18,410.80/x
  3. Step 3: Cross multiply
    28,276.60x = 42,366.30 × 18,410.80
  4. Step 4: Simplify right side
    28,276.60x = 779,997,476.04
  5. Step 5: Solve for x
    x = 779,997,476.04/28,276.60
  6. Step 6: Final answer
    x = 27,584.56

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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.