Home / 18,933.43-26,128.14-10,980.28

Finding the Fourth Proportional to 18,933.43, 26,128.14 and 10,980.28

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Solution

The fourth proportional to 18,933.43, 26,128.14 and 10,980.28 is: 15,152.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,933.43 : 26,128.14 = 10,980.28 : x
  2. Step 2: Convert to fraction form
    18,933.43/26,128.14 = 10,980.28/x
  3. Step 3: Cross multiply
    18,933.43x = 26,128.14 × 10,980.28
  4. Step 4: Simplify right side
    18,933.43x = 286,894,293.08
  5. Step 5: Solve for x
    x = 286,894,293.08/18,933.43
  6. Step 6: Final answer
    x = 15,152.79

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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.