Home / 19,688.84-27,179.70-12,136.52

Finding the Fourth Proportional to 19,688.84, 27,179.70 and 12,136.52

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Solution

The fourth proportional to 19,688.84, 27,179.70 and 12,136.52 is: 16,754.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,688.84 : 27,179.70 = 12,136.52 : x
  2. Step 2: Convert to fraction form
    19,688.84/27,179.70 = 12,136.52/x
  3. Step 3: Cross multiply
    19,688.84x = 27,179.70 × 12,136.52
  4. Step 4: Simplify right side
    19,688.84x = 329,866,972.64
  5. Step 5: Solve for x
    x = 329,866,972.64/19,688.84
  6. Step 6: Final answer
    x = 16,754.01

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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.