Home / 21,259.08-31,787.34-19,400.10

Finding the Fourth Proportional to 21,259.08, 31,787.34 and 19,400.10

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Solution

The fourth proportional to 21,259.08, 31,787.34 and 19,400.10 is: 29,007.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,259.08 : 31,787.34 = 19,400.10 : x
  2. Step 2: Convert to fraction form
    21,259.08/31,787.34 = 19,400.10/x
  3. Step 3: Cross multiply
    21,259.08x = 31,787.34 × 19,400.10
  4. Step 4: Simplify right side
    21,259.08x = 616,677,574.73
  5. Step 5: Solve for x
    x = 616,677,574.73/21,259.08
  6. Step 6: Final answer
    x = 29,007.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.