Home / 20,706.57-28,574.19-11,753.91

Finding the Fourth Proportional to 20,706.57, 28,574.19 and 11,753.91

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Solution

The fourth proportional to 20,706.57, 28,574.19 and 11,753.91 is: 16,219.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,706.57 : 28,574.19 = 11,753.91 : x
  2. Step 2: Convert to fraction form
    20,706.57/28,574.19 = 11,753.91/x
  3. Step 3: Cross multiply
    20,706.57x = 28,574.19 × 11,753.91
  4. Step 4: Simplify right side
    20,706.57x = 335,858,457.58
  5. Step 5: Solve for x
    x = 335,858,457.58/20,706.57
  6. Step 6: Final answer
    x = 16,219.90

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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.