Home / 13,284.81-18,331.14-7,619.82

Finding the Fourth Proportional to 13,284.81, 18,331.14 and 7,619.82

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Solution

The fourth proportional to 13,284.81, 18,331.14 and 7,619.82 is: 10,514.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,284.81 : 18,331.14 = 7,619.82 : x
  2. Step 2: Convert to fraction form
    13,284.81/18,331.14 = 7,619.82/x
  3. Step 3: Cross multiply
    13,284.81x = 18,331.14 × 7,619.82
  4. Step 4: Simplify right side
    13,284.81x = 139,679,987.19
  5. Step 5: Solve for x
    x = 139,679,987.19/13,284.81
  6. Step 6: Final answer
    x = 10,514.26

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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.