Home / 21,200.74-29,257.14-13,247.58

Finding the Fourth Proportional to 21,200.74, 29,257.14 and 13,247.58

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Solution

The fourth proportional to 21,200.74, 29,257.14 and 13,247.58 is: 18,281.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,200.74 : 29,257.14 = 13,247.58 : x
  2. Step 2: Convert to fraction form
    21,200.74/29,257.14 = 13,247.58/x
  3. Step 3: Cross multiply
    21,200.74x = 29,257.14 × 13,247.58
  4. Step 4: Simplify right side
    21,200.74x = 387,586,302.72
  5. Step 5: Solve for x
    x = 387,586,302.72/21,200.74
  6. Step 6: Final answer
    x = 18,281.73

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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.