Home / 18,989.82-26,181.60-15,574.32

Finding the Fourth Proportional to 18,989.82, 26,181.60 and 15,574.32

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Solution

The fourth proportional to 18,989.82, 26,181.60 and 15,574.32 is: 21,472.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,989.82 : 26,181.60 = 15,574.32 : x
  2. Step 2: Convert to fraction form
    18,989.82/26,181.60 = 15,574.32/x
  3. Step 3: Cross multiply
    18,989.82x = 26,181.60 × 15,574.32
  4. Step 4: Simplify right side
    18,989.82x = 407,760,616.51
  5. Step 5: Solve for x
    x = 407,760,616.51/18,989.82
  6. Step 6: Final answer
    x = 21,472.59

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1.5x scale

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.