Home / 10,555.20-15,795.36-7,775.28

Finding the Fourth Proportional to 10,555.20, 15,795.36 and 7,775.28

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Solution

The fourth proportional to 10,555.20, 15,795.36 and 7,775.28 is: 11,635.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,555.20 : 15,795.36 = 7,775.28 : x
  2. Step 2: Convert to fraction form
    10,555.20/15,795.36 = 7,775.28/x
  3. Step 3: Cross multiply
    10,555.20x = 15,795.36 × 7,775.28
  4. Step 4: Simplify right side
    10,555.20x = 122,813,346.70
  5. Step 5: Solve for x
    x = 122,813,346.70/10,555.20
  6. Step 6: Final answer
    x = 11,635.34

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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.