Home / 28,079.78-38,750.10-15,504.50

Finding the Fourth Proportional to 28,079.78, 38,750.10 and 15,504.50

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Solution

The fourth proportional to 28,079.78, 38,750.10 and 15,504.50 is: 21,396.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,079.78 : 38,750.10 = 15,504.50 : x
  2. Step 2: Convert to fraction form
    28,079.78/38,750.10 = 15,504.50/x
  3. Step 3: Cross multiply
    28,079.78x = 38,750.10 × 15,504.50
  4. Step 4: Simplify right side
    28,079.78x = 600,800,925.45
  5. Step 5: Solve for x
    x = 600,800,925.45/28,079.78
  6. Step 6: Final answer
    x = 21,396.21

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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.