Home / 19,838.75-29,765.62-10,478.39

Finding the Fourth Proportional to 19,838.75, 29,765.62 and 10,478.39

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Solution

The fourth proportional to 19,838.75, 29,765.62 and 10,478.39 is: 15,721.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,838.75 : 29,765.62 = 10,478.39 : x
  2. Step 2: Convert to fraction form
    19,838.75/29,765.62 = 10,478.39/x
  3. Step 3: Cross multiply
    19,838.75x = 29,765.62 × 10,478.39
  4. Step 4: Simplify right side
    19,838.75x = 311,895,774.95
  5. Step 5: Solve for x
    x = 311,895,774.95/19,838.75
  6. Step 6: Final answer
    x = 15,721.54

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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.