Home / 28,342.96-39,114.84-15,767.44

Finding the Fourth Proportional to 28,342.96, 39,114.84 and 15,767.44

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Solution

The fourth proportional to 28,342.96, 39,114.84 and 15,767.44 is: 21,759.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,342.96 : 39,114.84 = 15,767.44 : x
  2. Step 2: Convert to fraction form
    28,342.96/39,114.84 = 15,767.44/x
  3. Step 3: Cross multiply
    28,342.96x = 39,114.84 × 15,767.44
  4. Step 4: Simplify right side
    28,342.96x = 616,740,892.81
  5. Step 5: Solve for x
    x = 616,740,892.81/28,342.96
  6. Step 6: Final answer
    x = 21,759.93

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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.