Home / 21,335.52-31,815.24-19,858.08

Finding the Fourth Proportional to 21,335.52, 31,815.24 and 19,858.08

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Solution

The fourth proportional to 21,335.52, 31,815.24 and 19,858.08 is: 29,612.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,335.52 : 31,815.24 = 19,858.08 : x
  2. Step 2: Convert to fraction form
    21,335.52/31,815.24 = 19,858.08/x
  3. Step 3: Cross multiply
    21,335.52x = 31,815.24 × 19,858.08
  4. Step 4: Simplify right side
    21,335.52x = 631,789,581.14
  5. Step 5: Solve for x
    x = 631,789,581.14/21,335.52
  6. Step 6: Final answer
    x = 29,612.10

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.