Home / 15,231.98-21,011.37-8,943.14

Finding the Fourth Proportional to 15,231.98, 21,011.37 and 8,943.14

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Solution

The fourth proportional to 15,231.98, 21,011.37 and 8,943.14 is: 12,336.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,231.98 : 21,011.37 = 8,943.14 : x
  2. Step 2: Convert to fraction form
    15,231.98/21,011.37 = 8,943.14/x
  3. Step 3: Cross multiply
    15,231.98x = 21,011.37 × 8,943.14
  4. Step 4: Simplify right side
    15,231.98x = 187,907,623.50
  5. Step 5: Solve for x
    x = 187,907,623.50/15,231.98
  6. Step 6: Final answer
    x = 12,336.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.