Home / 40,899.07-61,348.62-12,821.31

Finding the Fourth Proportional to 40,899.07, 61,348.62 and 12,821.31

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Solution

The fourth proportional to 40,899.07, 61,348.62 and 12,821.31 is: 19,231.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,899.07 : 61,348.62 = 12,821.31 : x
  2. Step 2: Convert to fraction form
    40,899.07/61,348.62 = 12,821.31/x
  3. Step 3: Cross multiply
    40,899.07x = 61,348.62 × 12,821.31
  4. Step 4: Simplify right side
    40,899.07x = 786,569,675.09
  5. Step 5: Solve for x
    x = 786,569,675.09/40,899.07
  6. Step 6: Final answer
    x = 19,231.97

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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.