Home / 30,987.93-42,761.71-17,559.35

Finding the Fourth Proportional to 30,987.93, 42,761.71 and 17,559.35

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Solution

The fourth proportional to 30,987.93, 42,761.71 and 17,559.35 is: 24,230.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,987.93 : 42,761.71 = 17,559.35 : x
  2. Step 2: Convert to fraction form
    30,987.93/42,761.71 = 17,559.35/x
  3. Step 3: Cross multiply
    30,987.93x = 42,761.71 × 17,559.35
  4. Step 4: Simplify right side
    30,987.93x = 750,867,530.88
  5. Step 5: Solve for x
    x = 750,867,530.88/30,987.93
  6. Step 6: Final answer
    x = 24,230.97

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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.