Home / 20,085.72-27,711.18-12,013.80

Finding the Fourth Proportional to 20,085.72, 27,711.18 and 12,013.80

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Solution

The fourth proportional to 20,085.72, 27,711.18 and 12,013.80 is: 16,574.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,085.72 : 27,711.18 = 12,013.80 : x
  2. Step 2: Convert to fraction form
    20,085.72/27,711.18 = 12,013.80/x
  3. Step 3: Cross multiply
    20,085.72x = 27,711.18 × 12,013.80
  4. Step 4: Simplify right side
    20,085.72x = 332,916,574.28
  5. Step 5: Solve for x
    x = 332,916,574.28/20,085.72
  6. Step 6: Final answer
    x = 16,574.79

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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.