Home / 42,816.40-64,230.75-13,236.54

Finding the Fourth Proportional to 42,816.40, 64,230.75 and 13,236.54

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Solution

The fourth proportional to 42,816.40, 64,230.75 and 13,236.54 is: 19,856.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,816.40 : 64,230.75 = 13,236.54 : x
  2. Step 2: Convert to fraction form
    42,816.40/64,230.75 = 13,236.54/x
  3. Step 3: Cross multiply
    42,816.40x = 64,230.75 × 13,236.54
  4. Step 4: Simplify right side
    42,816.40x = 850,192,794.16
  5. Step 5: Solve for x
    x = 850,192,794.16/42,816.40
  6. Step 6: Final answer
    x = 19,856.71

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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.