Home / 15,215.87-21,024.74-11,709.38

Finding the Fourth Proportional to 15,215.87, 21,024.74 and 11,709.38

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Solution

The fourth proportional to 15,215.87, 21,024.74 and 11,709.38 is: 16,179.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,215.87 : 21,024.74 = 11,709.38 : x
  2. Step 2: Convert to fraction form
    15,215.87/21,024.74 = 11,709.38/x
  3. Step 3: Cross multiply
    15,215.87x = 21,024.74 × 11,709.38
  4. Step 4: Simplify right side
    15,215.87x = 246,186,664.08
  5. Step 5: Solve for x
    x = 246,186,664.08/15,215.87
  6. Step 6: Final answer
    x = 16,179.60

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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.