Home / 20,752.72-31,138.23-10,889.62

Finding the Fourth Proportional to 20,752.72, 31,138.23 and 10,889.62

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Solution

The fourth proportional to 20,752.72, 31,138.23 and 10,889.62 is: 16,339.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,752.72 : 31,138.23 = 10,889.62 : x
  2. Step 2: Convert to fraction form
    20,752.72/31,138.23 = 10,889.62/x
  3. Step 3: Cross multiply
    20,752.72x = 31,138.23 × 10,889.62
  4. Step 4: Simplify right side
    20,752.72x = 339,083,492.17
  5. Step 5: Solve for x
    x = 339,083,492.17/20,752.72
  6. Step 6: Final answer
    x = 16,339.23

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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.