Home / 30,985.49-42,759.85-17,559.31

Finding the Fourth Proportional to 30,985.49, 42,759.85 and 17,559.31

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Solution

The fourth proportional to 30,985.49, 42,759.85 and 17,559.31 is: 24,231.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,985.49 : 42,759.85 = 17,559.31 : x
  2. Step 2: Convert to fraction form
    30,985.49/42,759.85 = 17,559.31/x
  3. Step 3: Cross multiply
    30,985.49x = 42,759.85 × 17,559.31
  4. Step 4: Simplify right side
    30,985.49x = 750,833,461.70
  5. Step 5: Solve for x
    x = 750,833,461.70/30,985.49
  6. Step 6: Final answer
    x = 24,231.78

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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.