Home / 21,931.92-30,264.66-12,498.84

Finding the Fourth Proportional to 21,931.92, 30,264.66 and 12,498.84

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Solution

The fourth proportional to 21,931.92, 30,264.66 and 12,498.84 is: 17,247.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,931.92 : 30,264.66 = 12,498.84 : x
  2. Step 2: Convert to fraction form
    21,931.92/30,264.66 = 12,498.84/x
  3. Step 3: Cross multiply
    21,931.92x = 30,264.66 × 12,498.84
  4. Step 4: Simplify right side
    21,931.92x = 378,273,142.99
  5. Step 5: Solve for x
    x = 378,273,142.99/21,931.92
  6. Step 6: Final answer
    x = 17,247.61

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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.