Home / 15,215.56-21,024.30-11,709.07

Finding the Fourth Proportional to 15,215.56, 21,024.30 and 11,709.07

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Solution

The fourth proportional to 15,215.56, 21,024.30 and 11,709.07 is: 16,179.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,215.56 : 21,024.30 = 11,709.07 : x
  2. Step 2: Convert to fraction form
    15,215.56/21,024.30 = 11,709.07/x
  3. Step 3: Cross multiply
    15,215.56x = 21,024.30 × 11,709.07
  4. Step 4: Simplify right side
    15,215.56x = 246,175,000.40
  5. Step 5: Solve for x
    x = 246,175,000.40/15,215.56
  6. Step 6: Final answer
    x = 16,179.16

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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.