Home / 28,392.50-39,181.92-15,817.52

Finding the Fourth Proportional to 28,392.50, 39,181.92 and 15,817.52

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Solution

The fourth proportional to 28,392.50, 39,181.92 and 15,817.52 is: 21,828.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,392.50 : 39,181.92 = 15,817.52 : x
  2. Step 2: Convert to fraction form
    28,392.50/39,181.92 = 15,817.52/x
  3. Step 3: Cross multiply
    28,392.50x = 39,181.92 × 15,817.52
  4. Step 4: Simplify right side
    28,392.50x = 619,760,803.24
  5. Step 5: Solve for x
    x = 619,760,803.24/28,392.50
  6. Step 6: Final answer
    x = 21,828.33

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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.