Home / 21,430.46-32,150.82-8,943.54

Finding the Fourth Proportional to 21,430.46, 32,150.82 and 8,943.54

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Solution

The fourth proportional to 21,430.46, 32,150.82 and 8,943.54 is: 13,417.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,430.46 : 32,150.82 = 8,943.54 : x
  2. Step 2: Convert to fraction form
    21,430.46/32,150.82 = 8,943.54/x
  3. Step 3: Cross multiply
    21,430.46x = 32,150.82 × 8,943.54
  4. Step 4: Simplify right side
    21,430.46x = 287,542,144.70
  5. Step 5: Solve for x
    x = 287,542,144.70/21,430.46
  6. Step 6: Final answer
    x = 13,417.45

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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.