Home / 28,219.46-38,944.41-15,643.94

Finding the Fourth Proportional to 28,219.46, 38,944.41 and 15,643.94

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Solution

The fourth proportional to 28,219.46, 38,944.41 and 15,643.94 is: 21,589.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,219.46 : 38,944.41 = 15,643.94 : x
  2. Step 2: Convert to fraction form
    28,219.46/38,944.41 = 15,643.94/x
  3. Step 3: Cross multiply
    28,219.46x = 38,944.41 × 15,643.94
  4. Step 4: Simplify right side
    28,219.46x = 609,244,013.38
  5. Step 5: Solve for x
    x = 609,244,013.38/28,219.46
  6. Step 6: Final answer
    x = 21,589.50

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1.5x scale

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.