Home / 20,187.96-30,152.73-18,285.45

Finding the Fourth Proportional to 20,187.96, 30,152.73 and 18,285.45

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Solution

The fourth proportional to 20,187.96, 30,152.73 and 18,285.45 is: 27,311.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,187.96 : 30,152.73 = 18,285.45 : x
  2. Step 2: Convert to fraction form
    20,187.96/30,152.73 = 18,285.45/x
  3. Step 3: Cross multiply
    20,187.96x = 30,152.73 × 18,285.45
  4. Step 4: Simplify right side
    20,187.96x = 551,356,236.78
  5. Step 5: Solve for x
    x = 551,356,236.78/20,187.96
  6. Step 6: Final answer
    x = 27,311.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.