Home / 19,113.78-28,639.50-11,702.70

Finding the Fourth Proportional to 19,113.78, 28,639.50 and 11,702.70

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Solution

The fourth proportional to 19,113.78, 28,639.50 and 11,702.70 is: 17,534.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,113.78 : 28,639.50 = 11,702.70 : x
  2. Step 2: Convert to fraction form
    19,113.78/28,639.50 = 11,702.70/x
  3. Step 3: Cross multiply
    19,113.78x = 28,639.50 × 11,702.70
  4. Step 4: Simplify right side
    19,113.78x = 335,159,476.65
  5. Step 5: Solve for x
    x = 335,159,476.65/19,113.78
  6. Step 6: Final answer
    x = 17,534.97

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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.