Home / 21,240.54-29,311.64-12,287.84

Finding the Fourth Proportional to 21,240.54, 29,311.64 and 12,287.84

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Solution

The fourth proportional to 21,240.54, 29,311.64 and 12,287.84 is: 16,957.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,240.54 : 29,311.64 = 12,287.84 : x
  2. Step 2: Convert to fraction form
    21,240.54/29,311.64 = 12,287.84/x
  3. Step 3: Cross multiply
    21,240.54x = 29,311.64 × 12,287.84
  4. Step 4: Simplify right side
    21,240.54x = 360,176,742.46
  5. Step 5: Solve for x
    x = 360,176,742.46/21,240.54
  6. Step 6: Final answer
    x = 16,957.04

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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.