Home / 11,390.85-15,719.52-6,355.36

Finding the Fourth Proportional to 11,390.85, 15,719.52 and 6,355.36

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Solution

The fourth proportional to 11,390.85, 15,719.52 and 6,355.36 is: 8,770.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,390.85 : 15,719.52 = 6,355.36 : x
  2. Step 2: Convert to fraction form
    11,390.85/15,719.52 = 6,355.36/x
  3. Step 3: Cross multiply
    11,390.85x = 15,719.52 × 6,355.36
  4. Step 4: Simplify right side
    11,390.85x = 99,903,216.36
  5. Step 5: Solve for x
    x = 99,903,216.36/11,390.85
  6. Step 6: Final answer
    x = 8,770.48

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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.