Home / 18,928.47-26,121.29-10,975.31

Finding the Fourth Proportional to 18,928.47, 26,121.29 and 10,975.31

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Solution

The fourth proportional to 18,928.47, 26,121.29 and 10,975.31 is: 15,145.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,928.47 : 26,121.29 = 10,975.31 : x
  2. Step 2: Convert to fraction form
    18,928.47/26,121.29 = 10,975.31/x
  3. Step 3: Cross multiply
    18,928.47x = 26,121.29 × 10,975.31
  4. Step 4: Simplify right side
    18,928.47x = 286,689,255.35
  5. Step 5: Solve for x
    x = 286,689,255.35/18,928.47
  6. Step 6: Final answer
    x = 15,145.93

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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.