Home / 15,622.95-21,537.24-11,138.91

Finding the Fourth Proportional to 15,622.95, 21,537.24 and 11,138.91

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Solution

The fourth proportional to 15,622.95, 21,537.24 and 11,138.91 is: 15,355.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,622.95 : 21,537.24 = 11,138.91 : x
  2. Step 2: Convert to fraction form
    15,622.95/21,537.24 = 11,138.91/x
  3. Step 3: Cross multiply
    15,622.95x = 21,537.24 × 11,138.91
  4. Step 4: Simplify right side
    15,622.95x = 239,901,446.07
  5. Step 5: Solve for x
    x = 239,901,446.07/15,622.95
  6. Step 6: Final answer
    x = 15,355.71

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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.