Home / 28,010.09-42,021.38-12,217.69

Finding the Fourth Proportional to 28,010.09, 42,021.38 and 12,217.69

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Solution

The fourth proportional to 28,010.09, 42,021.38 and 12,217.69 is: 18,329.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,010.09 : 42,021.38 = 12,217.69 : x
  2. Step 2: Convert to fraction form
    28,010.09/42,021.38 = 12,217.69/x
  3. Step 3: Cross multiply
    28,010.09x = 42,021.38 × 12,217.69
  4. Step 4: Simplify right side
    28,010.09x = 513,403,923.02
  5. Step 5: Solve for x
    x = 513,403,923.02/28,010.09
  6. Step 6: Final answer
    x = 18,329.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.