Home / 11,420.59-15,760.76-6,385.02

Finding the Fourth Proportional to 11,420.59, 15,760.76 and 6,385.02

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Solution

The fourth proportional to 11,420.59, 15,760.76 and 6,385.02 is: 8,811.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,420.59 : 15,760.76 = 6,385.02 : x
  2. Step 2: Convert to fraction form
    11,420.59/15,760.76 = 6,385.02/x
  3. Step 3: Cross multiply
    11,420.59x = 15,760.76 × 6,385.02
  4. Step 4: Simplify right side
    11,420.59x = 100,632,801.36
  5. Step 5: Solve for x
    x = 100,632,801.36/11,420.59
  6. Step 6: Final answer
    x = 8,811.52

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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.