Home / 21,709.63-29,959.28-12,277.99

Finding the Fourth Proportional to 21,709.63, 29,959.28 and 12,277.99

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Solution

The fourth proportional to 21,709.63, 29,959.28 and 12,277.99 is: 16,943.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,709.63 : 29,959.28 = 12,277.99 : x
  2. Step 2: Convert to fraction form
    21,709.63/29,959.28 = 12,277.99/x
  3. Step 3: Cross multiply
    21,709.63x = 29,959.28 × 12,277.99
  4. Step 4: Simplify right side
    21,709.63x = 367,839,621.15
  5. Step 5: Solve for x
    x = 367,839,621.15/21,709.63
  6. Step 6: Final answer
    x = 16,943.62

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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.