Home / 28,792.93-39,734.97-15,872.71

Finding the Fourth Proportional to 28,792.93, 39,734.97 and 15,872.71

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Solution

The fourth proportional to 28,792.93, 39,734.97 and 15,872.71 is: 21,904.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,792.93 : 39,734.97 = 15,872.71 : x
  2. Step 2: Convert to fraction form
    28,792.93/39,734.97 = 15,872.71/x
  3. Step 3: Cross multiply
    28,792.93x = 39,734.97 × 15,872.71
  4. Step 4: Simplify right side
    28,792.93x = 630,701,655.67
  5. Step 5: Solve for x
    x = 630,701,655.67/28,792.93
  6. Step 6: Final answer
    x = 21,904.74

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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.