Home / 28,086.80-42,112.20-13,276.40

Finding the Fourth Proportional to 28,086.80, 42,112.20 and 13,276.40

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Solution

The fourth proportional to 28,086.80, 42,112.20 and 13,276.40 is: 19,906.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,086.80 : 42,112.20 = 13,276.40 : x
  2. Step 2: Convert to fraction form
    28,086.80/42,112.20 = 13,276.40/x
  3. Step 3: Cross multiply
    28,086.80x = 42,112.20 × 13,276.40
  4. Step 4: Simplify right side
    28,086.80x = 559,098,412.08
  5. Step 5: Solve for x
    x = 559,098,412.08/28,086.80
  6. Step 6: Final answer
    x = 19,906.09

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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.