Home / 10,999.20-16,499.56-4,425.40

Finding the Fourth Proportional to 10,999.20, 16,499.56 and 4,425.40

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Solution

The fourth proportional to 10,999.20, 16,499.56 and 4,425.40 is: 6,638.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,999.20 : 16,499.56 = 4,425.40 : x
  2. Step 2: Convert to fraction form
    10,999.20/16,499.56 = 4,425.40/x
  3. Step 3: Cross multiply
    10,999.20x = 16,499.56 × 4,425.40
  4. Step 4: Simplify right side
    10,999.20x = 73,017,152.82
  5. Step 5: Solve for x
    x = 73,017,152.82/10,999.20
  6. Step 6: Final answer
    x = 6,638.41

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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.