Home / 21,119.72-29,148.48-12,045.09

Finding the Fourth Proportional to 21,119.72, 29,148.48 and 12,045.09

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Solution

The fourth proportional to 21,119.72, 29,148.48 and 12,045.09 is: 16,624.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,119.72 : 29,148.48 = 12,045.09 : x
  2. Step 2: Convert to fraction form
    21,119.72/29,148.48 = 12,045.09/x
  3. Step 3: Cross multiply
    21,119.72x = 29,148.48 × 12,045.09
  4. Step 4: Simplify right side
    21,119.72x = 351,096,064.96
  5. Step 5: Solve for x
    x = 351,096,064.96/21,119.72
  6. Step 6: Final answer
    x = 16,624.09

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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.