Home / 21,557.26-29,748.36-12,126.34

Finding the Fourth Proportional to 21,557.26, 29,748.36 and 12,126.34

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Solution

The fourth proportional to 21,557.26, 29,748.36 and 12,126.34 is: 16,733.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,557.26 : 29,748.36 = 12,126.34 : x
  2. Step 2: Convert to fraction form
    21,557.26/29,748.36 = 12,126.34/x
  3. Step 3: Cross multiply
    21,557.26x = 29,748.36 × 12,126.34
  4. Step 4: Simplify right side
    21,557.26x = 360,738,727.80
  5. Step 5: Solve for x
    x = 360,738,727.80/21,557.26
  6. Step 6: Final answer
    x = 16,733.98

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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.