Home / 21,557.58-29,750.76-12,126.84

Finding the Fourth Proportional to 21,557.58, 29,750.76 and 12,126.84

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Solution

The fourth proportional to 21,557.58, 29,750.76 and 12,126.84 is: 16,735.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,557.58 : 29,750.76 = 12,126.84 : x
  2. Step 2: Convert to fraction form
    21,557.58/29,750.76 = 12,126.84/x
  3. Step 3: Cross multiply
    21,557.58x = 29,750.76 × 12,126.84
  4. Step 4: Simplify right side
    21,557.58x = 360,782,706.40
  5. Step 5: Solve for x
    x = 360,782,706.40/21,557.58
  6. Step 6: Final answer
    x = 16,735.77

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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.