Home / 19,805.63-29,708.82-7,319.21

Finding the Fourth Proportional to 19,805.63, 29,708.82 and 7,319.21

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Solution

The fourth proportional to 19,805.63, 29,708.82 and 7,319.21 is: 10,978.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,805.63 : 29,708.82 = 7,319.21 : x
  2. Step 2: Convert to fraction form
    19,805.63/29,708.82 = 7,319.21/x
  3. Step 3: Cross multiply
    19,805.63x = 29,708.82 × 7,319.21
  4. Step 4: Simplify right side
    19,805.63x = 217,444,943.89
  5. Step 5: Solve for x
    x = 217,444,943.89/19,805.63
  6. Step 6: Final answer
    x = 10,978.95

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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.