Home / 13,108.83-18,090.54-7,140.60

Finding the Fourth Proportional to 13,108.83, 18,090.54 and 7,140.60

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Solution

The fourth proportional to 13,108.83, 18,090.54 and 7,140.60 is: 9,854.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,108.83 : 18,090.54 = 7,140.60 : x
  2. Step 2: Convert to fraction form
    13,108.83/18,090.54 = 7,140.60/x
  3. Step 3: Cross multiply
    13,108.83x = 18,090.54 × 7,140.60
  4. Step 4: Simplify right side
    13,108.83x = 129,177,309.92
  5. Step 5: Solve for x
    x = 129,177,309.92/13,108.83
  6. Step 6: Final answer
    x = 9,854.22

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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.