Home / 28,990.18-43,491.47-8,999.24

Finding the Fourth Proportional to 28,990.18, 43,491.47 and 8,999.24

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Solution

The fourth proportional to 28,990.18, 43,491.47 and 8,999.24 is: 13,500.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,990.18 : 43,491.47 = 8,999.24 : x
  2. Step 2: Convert to fraction form
    28,990.18/43,491.47 = 8,999.24/x
  3. Step 3: Cross multiply
    28,990.18x = 43,491.47 × 8,999.24
  4. Step 4: Simplify right side
    28,990.18x = 391,389,964.65
  5. Step 5: Solve for x
    x = 391,389,964.65/28,990.18
  6. Step 6: Final answer
    x = 13,500.78

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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.