Home / 39,721.06-54,814.77-21,572.14

Finding the Fourth Proportional to 39,721.06, 54,814.77 and 21,572.14

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Solution

The fourth proportional to 39,721.06, 54,814.77 and 21,572.14 is: 29,769.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,721.06 : 54,814.77 = 21,572.14 : x
  2. Step 2: Convert to fraction form
    39,721.06/54,814.77 = 21,572.14/x
  3. Step 3: Cross multiply
    39,721.06x = 54,814.77 × 21,572.14
  4. Step 4: Simplify right side
    39,721.06x = 1,182,471,892.51
  5. Step 5: Solve for x
    x = 1,182,471,892.51/39,721.06
  6. Step 6: Final answer
    x = 29,769.39

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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.