Home / 20,804.04-28,706.25-11,851.71

Finding the Fourth Proportional to 20,804.04, 28,706.25 and 11,851.71

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Solution

The fourth proportional to 20,804.04, 28,706.25 and 11,851.71 is: 16,353.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,804.04 : 28,706.25 = 11,851.71 : x
  2. Step 2: Convert to fraction form
    20,804.04/28,706.25 = 11,851.71/x
  3. Step 3: Cross multiply
    20,804.04x = 28,706.25 × 11,851.71
  4. Step 4: Simplify right side
    20,804.04x = 340,218,150.19
  5. Step 5: Solve for x
    x = 340,218,150.19/20,804.04
  6. Step 6: Final answer
    x = 16,353.47

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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.