Home / 20,800.65-31,200.49-8,962.30

Finding the Fourth Proportional to 20,800.65, 31,200.49 and 8,962.30

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Solution

The fourth proportional to 20,800.65, 31,200.49 and 8,962.30 is: 13,443.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,800.65 : 31,200.49 = 8,962.30 : x
  2. Step 2: Convert to fraction form
    20,800.65/31,200.49 = 8,962.30/x
  3. Step 3: Cross multiply
    20,800.65x = 31,200.49 × 8,962.30
  4. Step 4: Simplify right side
    20,800.65x = 279,628,151.53
  5. Step 5: Solve for x
    x = 279,628,151.53/20,800.65
  6. Step 6: Final answer
    x = 13,443.24

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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.