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Finding the Fourth Proportional to 14,799.65, 20,420.16 and 8,830.16

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Solution

The fourth proportional to 14,799.65, 20,420.16 and 8,830.16 is: 12,183.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,799.65 : 20,420.16 = 8,830.16 : x
  2. Step 2: Convert to fraction form
    14,799.65/20,420.16 = 8,830.16/x
  3. Step 3: Cross multiply
    14,799.65x = 20,420.16 × 8,830.16
  4. Step 4: Simplify right side
    14,799.65x = 180,313,280.03
  5. Step 5: Solve for x
    x = 180,313,280.03/14,799.65
  6. Step 6: Final answer
    x = 12,183.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.