Home / 13,090.40-18,065.19-7,425.33

Finding the Fourth Proportional to 13,090.40, 18,065.19 and 7,425.33

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Solution

The fourth proportional to 13,090.40, 18,065.19 and 7,425.33 is: 10,247.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,090.40 : 18,065.19 = 7,425.33 : x
  2. Step 2: Convert to fraction form
    13,090.40/18,065.19 = 7,425.33/x
  3. Step 3: Cross multiply
    13,090.40x = 18,065.19 × 7,425.33
  4. Step 4: Simplify right side
    13,090.40x = 134,139,997.26
  5. Step 5: Solve for x
    x = 134,139,997.26/13,090.40
  6. Step 6: Final answer
    x = 10,247.20

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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.