Home / 18,977.36-26,189.60-10,913.64

Finding the Fourth Proportional to 18,977.36, 26,189.60 and 10,913.64

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Solution

The fourth proportional to 18,977.36, 26,189.60 and 10,913.64 is: 15,061.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,977.36 : 26,189.60 = 10,913.64 : x
  2. Step 2: Convert to fraction form
    18,977.36/26,189.60 = 10,913.64/x
  3. Step 3: Cross multiply
    18,977.36x = 26,189.60 × 10,913.64
  4. Step 4: Simplify right side
    18,977.36x = 285,823,866.14
  5. Step 5: Solve for x
    x = 285,823,866.14/18,977.36
  6. Step 6: Final answer
    x = 15,061.31

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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.