Home / 39,670.63-54,743.65-21,765.27

Finding the Fourth Proportional to 39,670.63, 54,743.65 and 21,765.27

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Solution

The fourth proportional to 39,670.63, 54,743.65 and 21,765.27 is: 30,035.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,670.63 : 54,743.65 = 21,765.27 : x
  2. Step 2: Convert to fraction form
    39,670.63/54,743.65 = 21,765.27/x
  3. Step 3: Cross multiply
    39,670.63x = 54,743.65 × 21,765.27
  4. Step 4: Simplify right side
    39,670.63x = 1,191,510,323.04
  5. Step 5: Solve for x
    x = 1,191,510,323.04/39,670.63
  6. Step 6: Final answer
    x = 30,035.07

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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.