Home / 28,557.93-42,835.68-7,781.43

Finding the Fourth Proportional to 28,557.93, 42,835.68 and 7,781.43

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Solution

The fourth proportional to 28,557.93, 42,835.68 and 7,781.43 is: 11,671.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,557.93 : 42,835.68 = 7,781.43 : x
  2. Step 2: Convert to fraction form
    28,557.93/42,835.68 = 7,781.43/x
  3. Step 3: Cross multiply
    28,557.93x = 42,835.68 × 7,781.43
  4. Step 4: Simplify right side
    28,557.93x = 333,322,845.42
  5. Step 5: Solve for x
    x = 333,322,845.42/28,557.93
  6. Step 6: Final answer
    x = 11,671.81

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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.