Home / 18,936.90-26,130.78-10,977.48

Finding the Fourth Proportional to 18,936.90, 26,130.78 and 10,977.48

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Solution

The fourth proportional to 18,936.90, 26,130.78 and 10,977.48 is: 15,147.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,936.90 : 26,130.78 = 10,977.48 : x
  2. Step 2: Convert to fraction form
    18,936.90/26,130.78 = 10,977.48/x
  3. Step 3: Cross multiply
    18,936.90x = 26,130.78 × 10,977.48
  4. Step 4: Simplify right side
    18,936.90x = 286,850,114.83
  5. Step 5: Solve for x
    x = 286,850,114.83/18,936.90
  6. Step 6: Final answer
    x = 15,147.68

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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.