Home / 21,102.23-29,122.53-12,152.09

Finding the Fourth Proportional to 21,102.23, 29,122.53 and 12,152.09

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Solution

The fourth proportional to 21,102.23, 29,122.53 and 12,152.09 is: 16,770.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,102.23 : 29,122.53 = 12,152.09 : x
  2. Step 2: Convert to fraction form
    21,102.23/29,122.53 = 12,152.09/x
  3. Step 3: Cross multiply
    21,102.23x = 29,122.53 × 12,152.09
  4. Step 4: Simplify right side
    21,102.23x = 353,899,605.59
  5. Step 5: Solve for x
    x = 353,899,605.59/21,102.23
  6. Step 6: Final answer
    x = 16,770.72

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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.