Home / 38,921.10-53,707.92-21,919.91

Finding the Fourth Proportional to 38,921.10, 53,707.92 and 21,919.91

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Solution

The fourth proportional to 38,921.10, 53,707.92 and 21,919.91 is: 30,247.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,921.10 : 53,707.92 = 21,919.91 : x
  2. Step 2: Convert to fraction form
    38,921.10/53,707.92 = 21,919.91/x
  3. Step 3: Cross multiply
    38,921.10x = 53,707.92 × 21,919.91
  4. Step 4: Simplify right side
    38,921.10x = 1,177,272,772.69
  5. Step 5: Solve for x
    x = 1,177,272,772.69/38,921.10
  6. Step 6: Final answer
    x = 30,247.67

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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.