Home / 21,010.38-28,992.53-12,057.69

Finding the Fourth Proportional to 21,010.38, 28,992.53 and 12,057.69

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Solution

The fourth proportional to 21,010.38, 28,992.53 and 12,057.69 is: 16,638.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,010.38 : 28,992.53 = 12,057.69 : x
  2. Step 2: Convert to fraction form
    21,010.38/28,992.53 = 12,057.69/x
  3. Step 3: Cross multiply
    21,010.38x = 28,992.53 × 12,057.69
  4. Step 4: Simplify right side
    21,010.38x = 349,582,939.06
  5. Step 5: Solve for x
    x = 349,582,939.06/21,010.38
  6. Step 6: Final answer
    x = 16,638.58

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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.