Home / 39,384.91-54,359.31-22,390.30

Finding the Fourth Proportional to 39,384.91, 54,359.31 and 22,390.30

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Solution

The fourth proportional to 39,384.91, 54,359.31 and 22,390.30 is: 30,903.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,384.91 : 54,359.31 = 22,390.30 : x
  2. Step 2: Convert to fraction form
    39,384.91/54,359.31 = 22,390.30/x
  3. Step 3: Cross multiply
    39,384.91x = 54,359.31 × 22,390.30
  4. Step 4: Simplify right side
    39,384.91x = 1,217,121,258.69
  5. Step 5: Solve for x
    x = 1,217,121,258.69/39,384.91
  6. Step 6: Final answer
    x = 30,903.24

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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.