Home / 30,702.18-42,355.22-18,763.30

Finding the Fourth Proportional to 30,702.18, 42,355.22 and 18,763.30

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Solution

The fourth proportional to 30,702.18, 42,355.22 and 18,763.30 is: 25,884.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,702.18 : 42,355.22 = 18,763.30 : x
  2. Step 2: Convert to fraction form
    30,702.18/42,355.22 = 18,763.30/x
  3. Step 3: Cross multiply
    30,702.18x = 42,355.22 × 18,763.30
  4. Step 4: Simplify right side
    30,702.18x = 794,723,699.43
  5. Step 5: Solve for x
    x = 794,723,699.43/30,702.18
  6. Step 6: Final answer
    x = 25,884.93

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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.