Home / 20,966.04-31,453.92-9,279.36

Finding the Fourth Proportional to 20,966.04, 31,453.92 and 9,279.36

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Solution

The fourth proportional to 20,966.04, 31,453.92 and 9,279.36 is: 13,921.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,966.04 : 31,453.92 = 9,279.36 : x
  2. Step 2: Convert to fraction form
    20,966.04/31,453.92 = 9,279.36/x
  3. Step 3: Cross multiply
    20,966.04x = 31,453.92 × 9,279.36
  4. Step 4: Simplify right side
    20,966.04x = 291,872,247.09
  5. Step 5: Solve for x
    x = 291,872,247.09/20,966.04
  6. Step 6: Final answer
    x = 13,921.19

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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.