Home / 30,643.59-42,292.43-17,215.88

Finding the Fourth Proportional to 30,643.59, 42,292.43 and 17,215.88

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Solution

The fourth proportional to 30,643.59, 42,292.43 and 17,215.88 is: 23,760.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,643.59 : 42,292.43 = 17,215.88 : x
  2. Step 2: Convert to fraction form
    30,643.59/42,292.43 = 17,215.88/x
  3. Step 3: Cross multiply
    30,643.59x = 42,292.43 × 17,215.88
  4. Step 4: Simplify right side
    30,643.59x = 728,101,102.25
  5. Step 5: Solve for x
    x = 728,101,102.25/30,643.59
  6. Step 6: Final answer
    x = 23,760.31

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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.