Home / 20,706.47-28,574.94-11,275.03

Finding the Fourth Proportional to 20,706.47, 28,574.94 and 11,275.03

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Solution

The fourth proportional to 20,706.47, 28,574.94 and 11,275.03 is: 15,559.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,706.47 : 28,574.94 = 11,275.03 : x
  2. Step 2: Convert to fraction form
    20,706.47/28,574.94 = 11,275.03/x
  3. Step 3: Cross multiply
    20,706.47x = 28,574.94 × 11,275.03
  4. Step 4: Simplify right side
    20,706.47x = 322,183,383.75
  5. Step 5: Solve for x
    x = 322,183,383.75/20,706.47
  6. Step 6: Final answer
    x = 15,559.55

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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.