Home / 39,892.76-55,052.26-21,987.77

Finding the Fourth Proportional to 39,892.76, 55,052.26 and 21,987.77

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Solution

The fourth proportional to 39,892.76, 55,052.26 and 21,987.77 is: 30,343.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,892.76 : 55,052.26 = 21,987.77 : x
  2. Step 2: Convert to fraction form
    39,892.76/55,052.26 = 21,987.77/x
  3. Step 3: Cross multiply
    39,892.76x = 55,052.26 × 21,987.77
  4. Step 4: Simplify right side
    39,892.76x = 1,210,476,210.57
  5. Step 5: Solve for x
    x = 1,210,476,210.57/39,892.76
  6. Step 6: Final answer
    x = 30,343.26

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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.