Home / 30,716.21-42,389.39-17,287.36

Finding the Fourth Proportional to 30,716.21, 42,389.39 and 17,287.36

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Solution

The fourth proportional to 30,716.21, 42,389.39 and 17,287.36 is: 23,857.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,716.21 : 42,389.39 = 17,287.36 : x
  2. Step 2: Convert to fraction form
    30,716.21/42,389.39 = 17,287.36/x
  3. Step 3: Cross multiply
    30,716.21x = 42,389.39 × 17,287.36
  4. Step 4: Simplify right side
    30,716.21x = 732,800,582.36
  5. Step 5: Solve for x
    x = 732,800,582.36/30,716.21
  6. Step 6: Final answer
    x = 23,857.13

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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.