Home / 19,347.90-28,999.17-8,937.78

Finding the Fourth Proportional to 19,347.90, 28,999.17 and 8,937.78

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Solution

The fourth proportional to 19,347.90, 28,999.17 and 8,937.78 is: 13,396.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,347.90 : 28,999.17 = 8,937.78 : x
  2. Step 2: Convert to fraction form
    19,347.90/28,999.17 = 8,937.78/x
  3. Step 3: Cross multiply
    19,347.90x = 28,999.17 × 8,937.78
  4. Step 4: Simplify right side
    19,347.90x = 259,188,201.64
  5. Step 5: Solve for x
    x = 259,188,201.64/19,347.90
  6. Step 6: Final answer
    x = 13,396.19

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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.