Home / 21,838.68-30,134.34-12,277.23

Finding the Fourth Proportional to 21,838.68, 30,134.34 and 12,277.23

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Solution

The fourth proportional to 21,838.68, 30,134.34 and 12,277.23 is: 16,940.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,838.68 : 30,134.34 = 12,277.23 : x
  2. Step 2: Convert to fraction form
    21,838.68/30,134.34 = 12,277.23/x
  3. Step 3: Cross multiply
    21,838.68x = 30,134.34 × 12,277.23
  4. Step 4: Simplify right side
    21,838.68x = 369,966,223.08
  5. Step 5: Solve for x
    x = 369,966,223.08/21,838.68
  6. Step 6: Final answer
    x = 16,940.87

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1.5x scale

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.