Home / 13,090.43-18,064.86-7,122.14

Finding the Fourth Proportional to 13,090.43, 18,064.86 and 7,122.14

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Solution

The fourth proportional to 13,090.43, 18,064.86 and 7,122.14 is: 9,828.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,090.43 : 18,064.86 = 7,122.14 : x
  2. Step 2: Convert to fraction form
    13,090.43/18,064.86 = 7,122.14/x
  3. Step 3: Cross multiply
    13,090.43x = 18,064.86 × 7,122.14
  4. Step 4: Simplify right side
    13,090.43x = 128,660,422.00
  5. Step 5: Solve for x
    x = 128,660,422.00/13,090.43
  6. Step 6: Final answer
    x = 9,828.59

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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.