Home / 28,485.53-42,743.61-11,857.04

Finding the Fourth Proportional to 28,485.53, 42,743.61 and 11,857.04

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Solution

The fourth proportional to 28,485.53, 42,743.61 and 11,857.04 is: 17,791.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,485.53 : 42,743.61 = 11,857.04 : x
  2. Step 2: Convert to fraction form
    28,485.53/42,743.61 = 11,857.04/x
  3. Step 3: Cross multiply
    28,485.53x = 42,743.61 × 11,857.04
  4. Step 4: Simplify right side
    28,485.53x = 506,812,479.80
  5. Step 5: Solve for x
    x = 506,812,479.80/28,485.53
  6. Step 6: Final answer
    x = 17,791.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.