Home / 28,586.43-39,447.81-15,839.28

Finding the Fourth Proportional to 28,586.43, 39,447.81 and 15,839.28

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Solution

The fourth proportional to 28,586.43, 39,447.81 and 15,839.28 is: 21,857.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,586.43 : 39,447.81 = 15,839.28 : x
  2. Step 2: Convert to fraction form
    28,586.43/39,447.81 = 15,839.28/x
  3. Step 3: Cross multiply
    28,586.43x = 39,447.81 × 15,839.28
  4. Step 4: Simplify right side
    28,586.43x = 624,824,907.98
  5. Step 5: Solve for x
    x = 624,824,907.98/28,586.43
  6. Step 6: Final answer
    x = 21,857.40

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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.