Home / 13,243.68-18,276.84-7,580.16

Finding the Fourth Proportional to 13,243.68, 18,276.84 and 7,580.16

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Solution

The fourth proportional to 13,243.68, 18,276.84 and 7,580.16 is: 10,460.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,243.68 : 18,276.84 = 7,580.16 : x
  2. Step 2: Convert to fraction form
    13,243.68/18,276.84 = 7,580.16/x
  3. Step 3: Cross multiply
    13,243.68x = 18,276.84 × 7,580.16
  4. Step 4: Simplify right side
    13,243.68x = 138,541,371.49
  5. Step 5: Solve for x
    x = 138,541,371.49/13,243.68
  6. Step 6: Final answer
    x = 10,460.94

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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.