Home / 35,781.21-53,679.11-13,590.45

Finding the Fourth Proportional to 35,781.21, 53,679.11 and 13,590.45

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Solution

The fourth proportional to 35,781.21, 53,679.11 and 13,590.45 is: 20,388.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,781.21 : 53,679.11 = 13,590.45 : x
  2. Step 2: Convert to fraction form
    35,781.21/53,679.11 = 13,590.45/x
  3. Step 3: Cross multiply
    35,781.21x = 53,679.11 × 13,590.45
  4. Step 4: Simplify right side
    35,781.21x = 729,523,192.55
  5. Step 5: Solve for x
    x = 729,523,192.55/35,781.21
  6. Step 6: Final answer
    x = 20,388.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.