Home / 30,690.04-42,354.48-18,755.64

Finding the Fourth Proportional to 30,690.04, 42,354.48 and 18,755.64

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Solution

The fourth proportional to 30,690.04, 42,354.48 and 18,755.64 is: 25,884.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,690.04 : 42,354.48 = 18,755.64 : x
  2. Step 2: Convert to fraction form
    30,690.04/42,354.48 = 18,755.64/x
  3. Step 3: Cross multiply
    30,690.04x = 42,354.48 × 18,755.64
  4. Step 4: Simplify right side
    30,690.04x = 794,385,379.27
  5. Step 5: Solve for x
    x = 794,385,379.27/30,690.04
  6. Step 6: Final answer
    x = 25,884.14

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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.