Home / 10,999.90-16,499.85-4,430.80

Finding the Fourth Proportional to 10,999.90, 16,499.85 and 4,430.80

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Solution

The fourth proportional to 10,999.90, 16,499.85 and 4,430.80 is: 6,646.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,999.90 : 16,499.85 = 4,430.80 : x
  2. Step 2: Convert to fraction form
    10,999.90/16,499.85 = 4,430.80/x
  3. Step 3: Cross multiply
    10,999.90x = 16,499.85 × 4,430.80
  4. Step 4: Simplify right side
    10,999.90x = 73,107,535.38
  5. Step 5: Solve for x
    x = 73,107,535.38/10,999.90
  6. Step 6: Final answer
    x = 6,646.20

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Similar ratio
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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.