Home / 18,857.33-28,119.41-18,688.44

Finding the Fourth Proportional to 18,857.33, 28,119.41 and 18,688.44

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Solution

The fourth proportional to 18,857.33, 28,119.41 and 18,688.44 is: 27,867.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,857.33 : 28,119.41 = 18,688.44 : x
  2. Step 2: Convert to fraction form
    18,857.33/28,119.41 = 18,688.44/x
  3. Step 3: Cross multiply
    18,857.33x = 28,119.41 × 18,688.44
  4. Step 4: Simplify right side
    18,857.33x = 525,507,953.34
  5. Step 5: Solve for x
    x = 525,507,953.34/18,857.33
  6. Step 6: Final answer
    x = 27,867.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.