Home / 28,515.31-39,350.46-15,768.16

Finding the Fourth Proportional to 28,515.31, 39,350.46 and 15,768.16

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Solution

The fourth proportional to 28,515.31, 39,350.46 and 15,768.16 is: 21,759.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,515.31 : 39,350.46 = 15,768.16 : x
  2. Step 2: Convert to fraction form
    28,515.31/39,350.46 = 15,768.16/x
  3. Step 3: Cross multiply
    28,515.31x = 39,350.46 × 15,768.16
  4. Step 4: Simplify right side
    28,515.31x = 620,484,349.35
  5. Step 5: Solve for x
    x = 620,484,349.35/28,515.31
  6. Step 6: Final answer
    x = 21,759.69

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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.