Home / 20,890.98-31,330.06-7,562.36

Finding the Fourth Proportional to 20,890.98, 31,330.06 and 7,562.36

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Solution

The fourth proportional to 20,890.98, 31,330.06 and 7,562.36 is: 11,341.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,890.98 : 31,330.06 = 7,562.36 : x
  2. Step 2: Convert to fraction form
    20,890.98/31,330.06 = 7,562.36/x
  3. Step 3: Cross multiply
    20,890.98x = 31,330.06 × 7,562.36
  4. Step 4: Simplify right side
    20,890.98x = 236,929,251.96
  5. Step 5: Solve for x
    x = 236,929,251.96/20,890.98
  6. Step 6: Final answer
    x = 11,341.22

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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.