Home / 30,781.61-42,476.07-17,356.16

Finding the Fourth Proportional to 30,781.61, 42,476.07 and 17,356.16

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Solution

The fourth proportional to 30,781.61, 42,476.07 and 17,356.16 is: 23,950.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,781.61 : 42,476.07 = 17,356.16 : x
  2. Step 2: Convert to fraction form
    30,781.61/42,476.07 = 17,356.16/x
  3. Step 3: Cross multiply
    30,781.61x = 42,476.07 × 17,356.16
  4. Step 4: Simplify right side
    30,781.61x = 737,221,467.09
  5. Step 5: Solve for x
    x = 737,221,467.09/30,781.61
  6. Step 6: Final answer
    x = 23,950.07

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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.