Home / 28,376.24-39,158.89-15,629.18

Finding the Fourth Proportional to 28,376.24, 39,158.89 and 15,629.18

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Solution

The fourth proportional to 28,376.24, 39,158.89 and 15,629.18 is: 21,568.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,376.24 : 39,158.89 = 15,629.18 : x
  2. Step 2: Convert to fraction form
    28,376.24/39,158.89 = 15,629.18/x
  3. Step 3: Cross multiply
    28,376.24x = 39,158.89 × 15,629.18
  4. Step 4: Simplify right side
    28,376.24x = 612,021,340.41
  5. Step 5: Solve for x
    x = 612,021,340.41/28,376.24
  6. Step 6: Final answer
    x = 21,568.09

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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.