Home / 20,896.49-31,127.54-19,764.69

Finding the Fourth Proportional to 20,896.49, 31,127.54 and 19,764.69

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Solution

The fourth proportional to 20,896.49, 31,127.54 and 19,764.69 is: 29,441.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,896.49 : 31,127.54 = 19,764.69 : x
  2. Step 2: Convert to fraction form
    20,896.49/31,127.54 = 19,764.69/x
  3. Step 3: Cross multiply
    20,896.49x = 31,127.54 × 19,764.69
  4. Step 4: Simplify right side
    20,896.49x = 615,226,178.56
  5. Step 5: Solve for x
    x = 615,226,178.56/20,896.49
  6. Step 6: Final answer
    x = 29,441.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.