Home / 18,725.57-28,088.93-8,190.17

Finding the Fourth Proportional to 18,725.57, 28,088.93 and 8,190.17

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Solution

The fourth proportional to 18,725.57, 28,088.93 and 8,190.17 is: 12,285.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,725.57 : 28,088.93 = 8,190.17 : x
  2. Step 2: Convert to fraction form
    18,725.57/28,088.93 = 8,190.17/x
  3. Step 3: Cross multiply
    18,725.57x = 28,088.93 × 8,190.17
  4. Step 4: Simplify right side
    18,725.57x = 230,053,111.82
  5. Step 5: Solve for x
    x = 230,053,111.82/18,725.57
  6. Step 6: Final answer
    x = 12,285.51

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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.