Home / 29,284.13-40,412.13-15,855.39

Finding the Fourth Proportional to 29,284.13, 40,412.13 and 15,855.39

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Solution

The fourth proportional to 29,284.13, 40,412.13 and 15,855.39 is: 21,880.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,284.13 : 40,412.13 = 15,855.39 : x
  2. Step 2: Convert to fraction form
    29,284.13/40,412.13 = 15,855.39/x
  3. Step 3: Cross multiply
    29,284.13x = 40,412.13 × 15,855.39
  4. Step 4: Simplify right side
    29,284.13x = 640,750,081.88
  5. Step 5: Solve for x
    x = 640,750,081.88/29,284.13
  6. Step 6: Final answer
    x = 21,880.46

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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.