Home / 28,845.72-43,281.90-11,320.20

Finding the Fourth Proportional to 28,845.72, 43,281.90 and 11,320.20

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Solution

The fourth proportional to 28,845.72, 43,281.90 and 11,320.20 is: 16,985.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,845.72 : 43,281.90 = 11,320.20 : x
  2. Step 2: Convert to fraction form
    28,845.72/43,281.90 = 11,320.20/x
  3. Step 3: Cross multiply
    28,845.72x = 43,281.90 × 11,320.20
  4. Step 4: Simplify right side
    28,845.72x = 489,959,764.38
  5. Step 5: Solve for x
    x = 489,959,764.38/28,845.72
  6. Step 6: Final answer
    x = 16,985.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.