Home / 28,144.49-42,188.79-15,670.22

Finding the Fourth Proportional to 28,144.49, 42,188.79 and 15,670.22

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Solution

The fourth proportional to 28,144.49, 42,188.79 and 15,670.22 is: 23,489.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,144.49 : 42,188.79 = 15,670.22 : x
  2. Step 2: Convert to fraction form
    28,144.49/42,188.79 = 15,670.22/x
  3. Step 3: Cross multiply
    28,144.49x = 42,188.79 × 15,670.22
  4. Step 4: Simplify right side
    28,144.49x = 661,107,620.83
  5. Step 5: Solve for x
    x = 661,107,620.83/28,144.49
  6. Step 6: Final answer
    x = 23,489.77

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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.