Home / 28,474.16-42,645.60-19,715.28

Finding the Fourth Proportional to 28,474.16, 42,645.60 and 19,715.28

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Solution

The fourth proportional to 28,474.16, 42,645.60 and 19,715.28 is: 29,527.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,474.16 : 42,645.60 = 19,715.28 : x
  2. Step 2: Convert to fraction form
    28,474.16/42,645.60 = 19,715.28/x
  3. Step 3: Cross multiply
    28,474.16x = 42,645.60 × 19,715.28
  4. Step 4: Simplify right side
    28,474.16x = 840,769,944.77
  5. Step 5: Solve for x
    x = 840,769,944.77/28,474.16
  6. Step 6: Final answer
    x = 29,527.47

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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.