Home / 18,963.17-28,448.40-7,275.47

Finding the Fourth Proportional to 18,963.17, 28,448.40 and 7,275.47

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Solution

The fourth proportional to 18,963.17, 28,448.40 and 7,275.47 is: 10,914.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,963.17 : 28,448.40 = 7,275.47 : x
  2. Step 2: Convert to fraction form
    18,963.17/28,448.40 = 7,275.47/x
  3. Step 3: Cross multiply
    18,963.17x = 28,448.40 × 7,275.47
  4. Step 4: Simplify right side
    18,963.17x = 206,975,338.51
  5. Step 5: Solve for x
    x = 206,975,338.51/18,963.17
  6. Step 6: Final answer
    x = 10,914.60

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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.