Home / 13,508.69-18,642.02-7,540.36

Finding the Fourth Proportional to 13,508.69, 18,642.02 and 7,540.36

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Solution

The fourth proportional to 13,508.69, 18,642.02 and 7,540.36 is: 10,405.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,508.69 : 18,642.02 = 7,540.36 : x
  2. Step 2: Convert to fraction form
    13,508.69/18,642.02 = 7,540.36/x
  3. Step 3: Cross multiply
    13,508.69x = 18,642.02 × 7,540.36
  4. Step 4: Simplify right side
    13,508.69x = 140,567,541.93
  5. Step 5: Solve for x
    x = 140,567,541.93/13,508.69
  6. Step 6: Final answer
    x = 10,405.71

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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.