Home / 11,100.96-15,320.70-6,385.20

Finding the Fourth Proportional to 11,100.96, 15,320.70 and 6,385.20

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Solution

The fourth proportional to 11,100.96, 15,320.70 and 6,385.20 is: 8,812.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,100.96 : 15,320.70 = 6,385.20 : x
  2. Step 2: Convert to fraction form
    11,100.96/15,320.70 = 6,385.20/x
  3. Step 3: Cross multiply
    11,100.96x = 15,320.70 × 6,385.20
  4. Step 4: Simplify right side
    11,100.96x = 97,825,733.64
  5. Step 5: Solve for x
    x = 97,825,733.64/11,100.96
  6. Step 6: Final answer
    x = 8,812.37

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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.