Home / 21,127.70-31,693.20-9,442.10

Finding the Fourth Proportional to 21,127.70, 31,693.20 and 9,442.10

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Solution

The fourth proportional to 21,127.70, 31,693.20 and 9,442.10 is: 14,163.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,127.70 : 31,693.20 = 9,442.10 : x
  2. Step 2: Convert to fraction form
    21,127.70/31,693.20 = 9,442.10/x
  3. Step 3: Cross multiply
    21,127.70x = 31,693.20 × 9,442.10
  4. Step 4: Simplify right side
    21,127.70x = 299,250,363.72
  5. Step 5: Solve for x
    x = 299,250,363.72/21,127.70
  6. Step 6: Final answer
    x = 14,163.89

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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.