Home / 18,945.98-26,145.69-10,988.54

Finding the Fourth Proportional to 18,945.98, 26,145.69 and 10,988.54

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Solution

The fourth proportional to 18,945.98, 26,145.69 and 10,988.54 is: 15,164.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,945.98 : 26,145.69 = 10,988.54 : x
  2. Step 2: Convert to fraction form
    18,945.98/26,145.69 = 10,988.54/x
  3. Step 3: Cross multiply
    18,945.98x = 26,145.69 × 10,988.54
  4. Step 4: Simplify right side
    18,945.98x = 287,302,960.39
  5. Step 5: Solve for x
    x = 287,302,960.39/18,945.98
  6. Step 6: Final answer
    x = 15,164.32

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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.