Home / 30,727.13-42,402.74-17,115.08

Finding the Fourth Proportional to 30,727.13, 42,402.74 and 17,115.08

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Solution

The fourth proportional to 30,727.13, 42,402.74 and 17,115.08 is: 23,618.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,727.13 : 42,402.74 = 17,115.08 : x
  2. Step 2: Convert to fraction form
    30,727.13/42,402.74 = 17,115.08/x
  3. Step 3: Cross multiply
    30,727.13x = 42,402.74 × 17,115.08
  4. Step 4: Simplify right side
    30,727.13x = 725,725,989.73
  5. Step 5: Solve for x
    x = 725,725,989.73/30,727.13
  6. Step 6: Final answer
    x = 23,618.41

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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.