Home / 28,585.09-42,885.33-11,939.59

Finding the Fourth Proportional to 28,585.09, 42,885.33 and 11,939.59

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Solution

The fourth proportional to 28,585.09, 42,885.33 and 11,939.59 is: 17,912.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,585.09 : 42,885.33 = 11,939.59 : x
  2. Step 2: Convert to fraction form
    28,585.09/42,885.33 = 11,939.59/x
  3. Step 3: Cross multiply
    28,585.09x = 42,885.33 × 11,939.59
  4. Step 4: Simplify right side
    28,585.09x = 512,033,257.21
  5. Step 5: Solve for x
    x = 512,033,257.21/28,585.09
  6. Step 6: Final answer
    x = 17,912.60

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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.