Home / 27,628.68-38,128.74-15,054.12

Finding the Fourth Proportional to 27,628.68, 38,128.74 and 15,054.12

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Solution

The fourth proportional to 27,628.68, 38,128.74 and 15,054.12 is: 20,775.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,628.68 : 38,128.74 = 15,054.12 : x
  2. Step 2: Convert to fraction form
    27,628.68/38,128.74 = 15,054.12/x
  3. Step 3: Cross multiply
    27,628.68x = 38,128.74 × 15,054.12
  4. Step 4: Simplify right side
    27,628.68x = 573,994,627.41
  5. Step 5: Solve for x
    x = 573,994,627.41/27,628.68
  6. Step 6: Final answer
    x = 20,775.32

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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.