Home / 11,065.70-16,598.55-7,129.10

Finding the Fourth Proportional to 11,065.70, 16,598.55 and 7,129.10

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Solution

The fourth proportional to 11,065.70, 16,598.55 and 7,129.10 is: 10,693.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,065.70 : 16,598.55 = 7,129.10 : x
  2. Step 2: Convert to fraction form
    11,065.70/16,598.55 = 7,129.10/x
  3. Step 3: Cross multiply
    11,065.70x = 16,598.55 × 7,129.10
  4. Step 4: Simplify right side
    11,065.70x = 118,332,722.81
  5. Step 5: Solve for x
    x = 118,332,722.81/11,065.70
  6. Step 6: Final answer
    x = 10,693.65

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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.