Home / 21,085.41-29,099.72-11,655.80

Finding the Fourth Proportional to 21,085.41, 29,099.72 and 11,655.80

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Solution

The fourth proportional to 21,085.41, 29,099.72 and 11,655.80 is: 16,086.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,085.41 : 29,099.72 = 11,655.80 : x
  2. Step 2: Convert to fraction form
    21,085.41/29,099.72 = 11,655.80/x
  3. Step 3: Cross multiply
    21,085.41x = 29,099.72 × 11,655.80
  4. Step 4: Simplify right side
    21,085.41x = 339,180,312.60
  5. Step 5: Solve for x
    x = 339,180,312.60/21,085.41
  6. Step 6: Final answer
    x = 16,086.02

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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.