Home / 39,670.13-54,742.97-21,764.77

Finding the Fourth Proportional to 39,670.13, 54,742.97 and 21,764.77

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Solution

The fourth proportional to 39,670.13, 54,742.97 and 21,764.77 is: 30,034.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,670.13 : 54,742.97 = 21,764.77 : x
  2. Step 2: Convert to fraction form
    39,670.13/54,742.97 = 21,764.77/x
  3. Step 3: Cross multiply
    39,670.13x = 54,742.97 × 21,764.77
  4. Step 4: Simplify right side
    39,670.13x = 1,191,467,768.63
  5. Step 5: Solve for x
    x = 1,191,467,768.63/39,670.13
  6. Step 6: Final answer
    x = 30,034.38

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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.