Home / 20,983.04-31,459.98-9,289.88

Finding the Fourth Proportional to 20,983.04, 31,459.98 and 9,289.88

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Solution

The fourth proportional to 20,983.04, 31,459.98 and 9,289.88 is: 13,928.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,983.04 : 31,459.98 = 9,289.88 : x
  2. Step 2: Convert to fraction form
    20,983.04/31,459.98 = 9,289.88/x
  3. Step 3: Cross multiply
    20,983.04x = 31,459.98 × 9,289.88
  4. Step 4: Simplify right side
    20,983.04x = 292,259,439.00
  5. Step 5: Solve for x
    x = 292,259,439.00/20,983.04
  6. Step 6: Final answer
    x = 13,928.36

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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.