Home / 18,914.40-28,373.34-4,874.48

Finding the Fourth Proportional to 18,914.40, 28,373.34 and 4,874.48

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Solution

The fourth proportional to 18,914.40, 28,373.34 and 4,874.48 is: 7,312.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,914.40 : 28,373.34 = 4,874.48 : x
  2. Step 2: Convert to fraction form
    18,914.40/28,373.34 = 4,874.48/x
  3. Step 3: Cross multiply
    18,914.40x = 28,373.34 × 4,874.48
  4. Step 4: Simplify right side
    18,914.40x = 138,305,278.36
  5. Step 5: Solve for x
    x = 138,305,278.36/18,914.40
  6. Step 6: Final answer
    x = 7,312.17

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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.