Home / 21,203.94-31,811.32-9,521.58

Finding the Fourth Proportional to 21,203.94, 31,811.32 and 9,521.58

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Solution

The fourth proportional to 21,203.94, 31,811.32 and 9,521.58 is: 14,284.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,203.94 : 31,811.32 = 9,521.58 : x
  2. Step 2: Convert to fraction form
    21,203.94/31,811.32 = 9,521.58/x
  3. Step 3: Cross multiply
    21,203.94x = 31,811.32 × 9,521.58
  4. Step 4: Simplify right side
    21,203.94x = 302,894,028.29
  5. Step 5: Solve for x
    x = 302,894,028.29/21,203.94
  6. Step 6: Final answer
    x = 14,284.80

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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.