Home / 38,660.36-53,458.68-30,688.76

Finding the Fourth Proportional to 38,660.36, 53,458.68 and 30,688.76

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Solution

The fourth proportional to 38,660.36, 53,458.68 and 30,688.76 is: 42,435.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,660.36 : 53,458.68 = 30,688.76 : x
  2. Step 2: Convert to fraction form
    38,660.36/53,458.68 = 30,688.76/x
  3. Step 3: Cross multiply
    38,660.36x = 53,458.68 × 30,688.76
  4. Step 4: Simplify right side
    38,660.36x = 1,640,580,600.44
  5. Step 5: Solve for x
    x = 1,640,580,600.44/38,660.36
  6. Step 6: Final answer
    x = 42,435.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.