Home / 10,980.26-15,140.22-8,742.23

Finding the Fourth Proportional to 10,980.26, 15,140.22 and 8,742.23

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Solution

The fourth proportional to 10,980.26, 15,140.22 and 8,742.23 is: 12,054.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,980.26 : 15,140.22 = 8,742.23 : x
  2. Step 2: Convert to fraction form
    10,980.26/15,140.22 = 8,742.23/x
  3. Step 3: Cross multiply
    10,980.26x = 15,140.22 × 8,742.23
  4. Step 4: Simplify right side
    10,980.26x = 132,359,285.49
  5. Step 5: Solve for x
    x = 132,359,285.49/10,980.26
  6. Step 6: Final answer
    x = 12,054.29

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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.