Home / 10,980.26-15,148.60-7,205.50

Finding the Fourth Proportional to 10,980.26, 15,148.60 and 7,205.50

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Solution

The fourth proportional to 10,980.26, 15,148.60 and 7,205.50 is: 9,940.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,980.26 : 15,148.60 = 7,205.50 : x
  2. Step 2: Convert to fraction form
    10,980.26/15,148.60 = 7,205.50/x
  3. Step 3: Cross multiply
    10,980.26x = 15,148.60 × 7,205.50
  4. Step 4: Simplify right side
    10,980.26x = 109,153,237.30
  5. Step 5: Solve for x
    x = 109,153,237.30/10,980.26
  6. Step 6: Final answer
    x = 9,940.86

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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.