Home / 18,933.38-26,128.07-10,980.21

Finding the Fourth Proportional to 18,933.38, 26,128.07 and 10,980.21

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Solution

The fourth proportional to 18,933.38, 26,128.07 and 10,980.21 is: 15,152.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,933.38 : 26,128.07 = 10,980.21 : x
  2. Step 2: Convert to fraction form
    18,933.38/26,128.07 = 10,980.21/x
  3. Step 3: Cross multiply
    18,933.38x = 26,128.07 × 10,980.21
  4. Step 4: Simplify right side
    18,933.38x = 286,891,640.59
  5. Step 5: Solve for x
    x = 286,891,640.59/18,933.38
  6. Step 6: Final answer
    x = 15,152.69

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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.