Home / 30,985.22-42,759.63-17,557.38

Finding the Fourth Proportional to 30,985.22, 42,759.63 and 17,557.38

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Solution

The fourth proportional to 30,985.22, 42,759.63 and 17,557.38 is: 24,229.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,985.22 : 42,759.63 = 17,557.38 : x
  2. Step 2: Convert to fraction form
    30,985.22/42,759.63 = 17,557.38/x
  3. Step 3: Cross multiply
    30,985.22x = 42,759.63 × 17,557.38
  4. Step 4: Simplify right side
    30,985.22x = 750,747,072.57
  5. Step 5: Solve for x
    x = 750,747,072.57/30,985.22
  6. Step 6: Final answer
    x = 24,229.20

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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.