Home / 28,571.42-39,426.91-15,824.55

Finding the Fourth Proportional to 28,571.42, 39,426.91 and 15,824.55

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Solution

The fourth proportional to 28,571.42, 39,426.91 and 15,824.55 is: 21,836.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,571.42 : 39,426.91 = 15,824.55 : x
  2. Step 2: Convert to fraction form
    28,571.42/39,426.91 = 15,824.55/x
  3. Step 3: Cross multiply
    28,571.42x = 39,426.91 × 15,824.55
  4. Step 4: Simplify right side
    28,571.42x = 623,913,108.64
  5. Step 5: Solve for x
    x = 623,913,108.64/28,571.42
  6. Step 6: Final answer
    x = 21,836.97

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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.