Home / 39,317.67-54,259.01-21,412.65

Finding the Fourth Proportional to 39,317.67, 54,259.01 and 21,412.65

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Solution

The fourth proportional to 39,317.67, 54,259.01 and 21,412.65 is: 29,549.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,317.67 : 54,259.01 = 21,412.65 : x
  2. Step 2: Convert to fraction form
    39,317.67/54,259.01 = 21,412.65/x
  3. Step 3: Cross multiply
    39,317.67x = 54,259.01 × 21,412.65
  4. Step 4: Simplify right side
    39,317.67x = 1,161,829,083.41
  5. Step 5: Solve for x
    x = 1,161,829,083.41/39,317.67
  6. Step 6: Final answer
    x = 29,549.79

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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.