Home / 20,806.08-31,209.02-5,223.70

Finding the Fourth Proportional to 20,806.08, 31,209.02 and 5,223.70

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Solution

The fourth proportional to 20,806.08, 31,209.02 and 5,223.70 is: 7,835.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,806.08 : 31,209.02 = 5,223.70 : x
  2. Step 2: Convert to fraction form
    20,806.08/31,209.02 = 5,223.70/x
  3. Step 3: Cross multiply
    20,806.08x = 31,209.02 × 5,223.70
  4. Step 4: Simplify right side
    20,806.08x = 163,026,557.77
  5. Step 5: Solve for x
    x = 163,026,557.77/20,806.08
  6. Step 6: Final answer
    x = 7,835.52

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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.