Home / 20,746.03-31,115.62-8,901.72

Finding the Fourth Proportional to 20,746.03, 31,115.62 and 8,901.72

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Solution

The fourth proportional to 20,746.03, 31,115.62 and 8,901.72 is: 13,351.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,746.03 : 31,115.62 = 8,901.72 : x
  2. Step 2: Convert to fraction form
    20,746.03/31,115.62 = 8,901.72/x
  3. Step 3: Cross multiply
    20,746.03x = 31,115.62 × 8,901.72
  4. Step 4: Simplify right side
    20,746.03x = 276,982,536.87
  5. Step 5: Solve for x
    x = 276,982,536.87/20,746.03
  6. Step 6: Final answer
    x = 13,351.11

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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.