Home / 30,987.08-42,761.28-17,562.67

Finding the Fourth Proportional to 30,987.08, 42,761.28 and 17,562.67

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Solution

The fourth proportional to 30,987.08, 42,761.28 and 17,562.67 is: 24,235.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,987.08 : 42,761.28 = 17,562.67 : x
  2. Step 2: Convert to fraction form
    30,987.08/42,761.28 = 17,562.67/x
  3. Step 3: Cross multiply
    30,987.08x = 42,761.28 × 17,562.67
  4. Step 4: Simplify right side
    30,987.08x = 751,001,947.80
  5. Step 5: Solve for x
    x = 751,001,947.80/30,987.08
  6. Step 6: Final answer
    x = 24,235.97

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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.