Home / 11,555.31-15,946.33-6,520.60

Finding the Fourth Proportional to 11,555.31, 15,946.33 and 6,520.60

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Solution

The fourth proportional to 11,555.31, 15,946.33 and 6,520.60 is: 8,998.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,555.31 : 15,946.33 = 6,520.60 : x
  2. Step 2: Convert to fraction form
    11,555.31/15,946.33 = 6,520.60/x
  3. Step 3: Cross multiply
    11,555.31x = 15,946.33 × 6,520.60
  4. Step 4: Simplify right side
    11,555.31x = 103,979,639.40
  5. Step 5: Solve for x
    x = 103,979,639.40/11,555.31
  6. Step 6: Final answer
    x = 8,998.43

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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.