Home / 20,901.18-31,343.05-7,746.37

Finding the Fourth Proportional to 20,901.18, 31,343.05 and 7,746.37

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Solution

The fourth proportional to 20,901.18, 31,343.05 and 7,746.37 is: 11,616.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,901.18 : 31,343.05 = 7,746.37 : x
  2. Step 2: Convert to fraction form
    20,901.18/31,343.05 = 7,746.37/x
  3. Step 3: Cross multiply
    20,901.18x = 31,343.05 × 7,746.37
  4. Step 4: Simplify right side
    20,901.18x = 242,794,862.23
  5. Step 5: Solve for x
    x = 242,794,862.23/20,901.18
  6. Step 6: Final answer
    x = 11,616.32

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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.