Home / 21,240.53-29,311.65-12,287.84

Finding the Fourth Proportional to 21,240.53, 29,311.65 and 12,287.84

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Solution

The fourth proportional to 21,240.53, 29,311.65 and 12,287.84 is: 16,957.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,240.53 : 29,311.65 = 12,287.84 : x
  2. Step 2: Convert to fraction form
    21,240.53/29,311.65 = 12,287.84/x
  3. Step 3: Cross multiply
    21,240.53x = 29,311.65 × 12,287.84
  4. Step 4: Simplify right side
    21,240.53x = 360,176,865.34
  5. Step 5: Solve for x
    x = 360,176,865.34/21,240.53
  6. Step 6: Final answer
    x = 16,957.06

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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.