Home / 11,005.20-16,507.80-9,709.20

Finding the Fourth Proportional to 11,005.20, 16,507.80 and 9,709.20

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Solution

The fourth proportional to 11,005.20, 16,507.80 and 9,709.20 is: 14,563.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,005.20 : 16,507.80 = 9,709.20 : x
  2. Step 2: Convert to fraction form
    11,005.20/16,507.80 = 9,709.20/x
  3. Step 3: Cross multiply
    11,005.20x = 16,507.80 × 9,709.20
  4. Step 4: Simplify right side
    11,005.20x = 160,277,531.76
  5. Step 5: Solve for x
    x = 160,277,531.76/11,005.20
  6. Step 6: Final answer
    x = 14,563.80

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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.