Home / 39,589.48-54,632.81-21,440.05

Finding the Fourth Proportional to 39,589.48, 54,632.81 and 21,440.05

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Solution

The fourth proportional to 39,589.48, 54,632.81 and 21,440.05 is: 29,586.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,589.48 : 54,632.81 = 21,440.05 : x
  2. Step 2: Convert to fraction form
    39,589.48/54,632.81 = 21,440.05/x
  3. Step 3: Cross multiply
    39,589.48x = 54,632.81 × 21,440.05
  4. Step 4: Simplify right side
    39,589.48x = 1,171,330,329.96
  5. Step 5: Solve for x
    x = 1,171,330,329.96/39,589.48
  6. Step 6: Final answer
    x = 29,586.91

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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.