Home / 39,670.47-54,744.77-21,765.65

Finding the Fourth Proportional to 39,670.47, 54,744.77 and 21,765.65

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Solution

The fourth proportional to 39,670.47, 54,744.77 and 21,765.65 is: 30,036.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,670.47 : 54,744.77 = 21,765.65 : x
  2. Step 2: Convert to fraction form
    39,670.47/54,744.77 = 21,765.65/x
  3. Step 3: Cross multiply
    39,670.47x = 54,744.77 × 21,765.65
  4. Step 4: Simplify right side
    39,670.47x = 1,191,555,283.84
  5. Step 5: Solve for x
    x = 1,191,555,283.84/39,670.47
  6. Step 6: Final answer
    x = 30,036.33

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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.