Home / 20,773.51-31,157.53-5,781.63

Finding the Fourth Proportional to 20,773.51, 31,157.53 and 5,781.63

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Solution

The fourth proportional to 20,773.51, 31,157.53 and 5,781.63 is: 8,671.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,773.51 : 31,157.53 = 5,781.63 : x
  2. Step 2: Convert to fraction form
    20,773.51/31,157.53 = 5,781.63/x
  3. Step 3: Cross multiply
    20,773.51x = 31,157.53 × 5,781.63
  4. Step 4: Simplify right side
    20,773.51x = 180,141,310.17
  5. Step 5: Solve for x
    x = 180,141,310.17/20,773.51
  6. Step 6: Final answer
    x = 8,671.68

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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.