Home / 19,721.52-27,224.49-15,345.95

Finding the Fourth Proportional to 19,721.52, 27,224.49 and 15,345.95

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Solution

The fourth proportional to 19,721.52, 27,224.49 and 15,345.95 is: 21,184.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,721.52 : 27,224.49 = 15,345.95 : x
  2. Step 2: Convert to fraction form
    19,721.52/27,224.49 = 15,345.95/x
  3. Step 3: Cross multiply
    19,721.52x = 27,224.49 × 15,345.95
  4. Step 4: Simplify right side
    19,721.52x = 417,785,787.92
  5. Step 5: Solve for x
    x = 417,785,787.92/19,721.52
  6. Step 6: Final answer
    x = 21,184.26

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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.