Home / 18,929.37-28,344.81-10,121.22

Finding the Fourth Proportional to 18,929.37, 28,344.81 and 10,121.22

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Solution

The fourth proportional to 18,929.37, 28,344.81 and 10,121.22 is: 15,155.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,929.37 : 28,344.81 = 10,121.22 : x
  2. Step 2: Convert to fraction form
    18,929.37/28,344.81 = 10,121.22/x
  3. Step 3: Cross multiply
    18,929.37x = 28,344.81 × 10,121.22
  4. Step 4: Simplify right side
    18,929.37x = 286,884,057.87
  5. Step 5: Solve for x
    x = 286,884,057.87/18,929.37
  6. Step 6: Final answer
    x = 15,155.50

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1.5x scale

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.