Home / 39,325.91-54,270.38-21,420.92

Finding the Fourth Proportional to 39,325.91, 54,270.38 and 21,420.92

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Solution

The fourth proportional to 39,325.91, 54,270.38 and 21,420.92 is: 29,561.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,325.91 : 54,270.38 = 21,420.92 : x
  2. Step 2: Convert to fraction form
    39,325.91/54,270.38 = 21,420.92/x
  3. Step 3: Cross multiply
    39,325.91x = 54,270.38 × 21,420.92
  4. Step 4: Simplify right side
    39,325.91x = 1,162,521,657.58
  5. Step 5: Solve for x
    x = 1,162,521,657.58/39,325.91
  6. Step 6: Final answer
    x = 29,561.22

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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.