Home / 13,581.09-18,743.40-7,614.36

Finding the Fourth Proportional to 13,581.09, 18,743.40 and 7,614.36

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Solution

The fourth proportional to 13,581.09, 18,743.40 and 7,614.36 is: 10,508.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,581.09 : 18,743.40 = 7,614.36 : x
  2. Step 2: Convert to fraction form
    13,581.09/18,743.40 = 7,614.36/x
  3. Step 3: Cross multiply
    13,581.09x = 18,743.40 × 7,614.36
  4. Step 4: Simplify right side
    13,581.09x = 142,718,995.22
  5. Step 5: Solve for x
    x = 142,718,995.22/13,581.09
  6. Step 6: Final answer
    x = 10,508.66

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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.