Home / 13,259.78-18,297.87-7,291.70

Finding the Fourth Proportional to 13,259.78, 18,297.87 and 7,291.70

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Solution

The fourth proportional to 13,259.78, 18,297.87 and 7,291.70 is: 10,062.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,259.78 : 18,297.87 = 7,291.70 : x
  2. Step 2: Convert to fraction form
    13,259.78/18,297.87 = 7,291.70/x
  3. Step 3: Cross multiply
    13,259.78x = 18,297.87 × 7,291.70
  4. Step 4: Simplify right side
    13,259.78x = 133,422,578.68
  5. Step 5: Solve for x
    x = 133,422,578.68/13,259.78
  6. Step 6: Final answer
    x = 10,062.20

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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.