Home / 28,201.78-42,302.60-11,561.84

Finding the Fourth Proportional to 28,201.78, 42,302.60 and 11,561.84

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Solution

The fourth proportional to 28,201.78, 42,302.60 and 11,561.84 is: 17,342.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,201.78 : 42,302.60 = 11,561.84 : x
  2. Step 2: Convert to fraction form
    28,201.78/42,302.60 = 11,561.84/x
  3. Step 3: Cross multiply
    28,201.78x = 42,302.60 × 11,561.84
  4. Step 4: Simplify right side
    28,201.78x = 489,095,892.78
  5. Step 5: Solve for x
    x = 489,095,892.78/28,201.78
  6. Step 6: Final answer
    x = 17,342.73

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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.