Home / 15,576.18-21,495.14-11,107.72

Finding the Fourth Proportional to 15,576.18, 21,495.14 and 11,107.72

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Solution

The fourth proportional to 15,576.18, 21,495.14 and 11,107.72 is: 15,328.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,576.18 : 21,495.14 = 11,107.72 : x
  2. Step 2: Convert to fraction form
    15,576.18/21,495.14 = 11,107.72/x
  3. Step 3: Cross multiply
    15,576.18x = 21,495.14 × 11,107.72
  4. Step 4: Simplify right side
    15,576.18x = 238,761,996.48
  5. Step 5: Solve for x
    x = 238,761,996.48/15,576.18
  6. Step 6: Final answer
    x = 15,328.66

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Half scale
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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.