Home / 20,895.99-31,126.80-19,764.19

Finding the Fourth Proportional to 20,895.99, 31,126.80 and 19,764.19

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Solution

The fourth proportional to 20,895.99, 31,126.80 and 19,764.19 is: 29,440.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,895.99 : 31,126.80 = 19,764.19 : x
  2. Step 2: Convert to fraction form
    20,895.99/31,126.80 = 19,764.19/x
  3. Step 3: Cross multiply
    20,895.99x = 31,126.80 × 19,764.19
  4. Step 4: Simplify right side
    20,895.99x = 615,195,939.88
  5. Step 5: Solve for x
    x = 615,195,939.88/20,895.99
  6. Step 6: Final answer
    x = 29,440.87

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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.