Home / 28,392.87-39,181.64-15,647.24

Finding the Fourth Proportional to 28,392.87, 39,181.64 and 15,647.24

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Solution

The fourth proportional to 28,392.87, 39,181.64 and 15,647.24 is: 21,592.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,392.87 : 39,181.64 = 15,647.24 : x
  2. Step 2: Convert to fraction form
    28,392.87/39,181.64 = 15,647.24/x
  3. Step 3: Cross multiply
    28,392.87x = 39,181.64 × 15,647.24
  4. Step 4: Simplify right side
    28,392.87x = 613,084,250.53
  5. Step 5: Solve for x
    x = 613,084,250.53/28,392.87
  6. Step 6: Final answer
    x = 21,592.89

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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.