Home / 27,015.51-40,520.43-12,780.57

Finding the Fourth Proportional to 27,015.51, 40,520.43 and 12,780.57

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Solution

The fourth proportional to 27,015.51, 40,520.43 and 12,780.57 is: 19,169.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,015.51 : 40,520.43 = 12,780.57 : x
  2. Step 2: Convert to fraction form
    27,015.51/40,520.43 = 12,780.57/x
  3. Step 3: Cross multiply
    27,015.51x = 40,520.43 × 12,780.57
  4. Step 4: Simplify right side
    27,015.51x = 517,874,192.05
  5. Step 5: Solve for x
    x = 517,874,192.05/27,015.51
  6. Step 6: Final answer
    x = 19,169.51

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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.