Home / 28,602.86-42,921.09-11,961.54

Finding the Fourth Proportional to 28,602.86, 42,921.09 and 11,961.54

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Solution

The fourth proportional to 28,602.86, 42,921.09 and 11,961.54 is: 17,949.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,602.86 : 42,921.09 = 11,961.54 : x
  2. Step 2: Convert to fraction form
    28,602.86/42,921.09 = 11,961.54/x
  3. Step 3: Cross multiply
    28,602.86x = 42,921.09 × 11,961.54
  4. Step 4: Simplify right side
    28,602.86x = 513,402,334.88
  5. Step 5: Solve for x
    x = 513,402,334.88/28,602.86
  6. Step 6: Final answer
    x = 17,949.34

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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.