Home / 20,965.48-31,448.54-5,382.76

Finding the Fourth Proportional to 20,965.48, 31,448.54 and 5,382.76

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Solution

The fourth proportional to 20,965.48, 31,448.54 and 5,382.76 is: 8,074.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,965.48 : 31,448.54 = 5,382.76 : x
  2. Step 2: Convert to fraction form
    20,965.48/31,448.54 = 5,382.76/x
  3. Step 3: Cross multiply
    20,965.48x = 31,448.54 × 5,382.76
  4. Step 4: Simplify right side
    20,965.48x = 169,279,943.17
  5. Step 5: Solve for x
    x = 169,279,943.17/20,965.48
  6. Step 6: Final answer
    x = 8,074.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.