Home / 20,706.03-28,574.37-11,275.20

Finding the Fourth Proportional to 20,706.03, 28,574.37 and 11,275.20

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Solution

The fourth proportional to 20,706.03, 28,574.37 and 11,275.20 is: 15,559.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,706.03 : 28,574.37 = 11,275.20 : x
  2. Step 2: Convert to fraction form
    20,706.03/28,574.37 = 11,275.20/x
  3. Step 3: Cross multiply
    20,706.03x = 28,574.37 × 11,275.20
  4. Step 4: Simplify right side
    20,706.03x = 322,181,736.62
  5. Step 5: Solve for x
    x = 322,181,736.62/20,706.03
  6. Step 6: Final answer
    x = 15,559.80

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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.