Home / 39,381.56-54,346.07-21,476.71

Finding the Fourth Proportional to 39,381.56, 54,346.07 and 21,476.71

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Solution

The fourth proportional to 39,381.56, 54,346.07 and 21,476.71 is: 29,637.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,381.56 : 54,346.07 = 21,476.71 : x
  2. Step 2: Convert to fraction form
    39,381.56/54,346.07 = 21,476.71/x
  3. Step 3: Cross multiply
    39,381.56x = 54,346.07 × 21,476.71
  4. Step 4: Simplify right side
    39,381.56x = 1,167,174,906.65
  5. Step 5: Solve for x
    x = 1,167,174,906.65/39,381.56
  6. Step 6: Final answer
    x = 29,637.60

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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.