Home / 13,090.06-18,063.75-7,121.74

Finding the Fourth Proportional to 13,090.06, 18,063.75 and 7,121.74

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Solution

The fourth proportional to 13,090.06, 18,063.75 and 7,121.74 is: 9,827.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,090.06 : 18,063.75 = 7,121.74 : x
  2. Step 2: Convert to fraction form
    13,090.06/18,063.75 = 7,121.74/x
  3. Step 3: Cross multiply
    13,090.06x = 18,063.75 × 7,121.74
  4. Step 4: Simplify right side
    13,090.06x = 128,645,346.34
  5. Step 5: Solve for x
    x = 128,645,346.34/13,090.06
  6. Step 6: Final answer
    x = 9,827.71

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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.