Home / 27,768.32-38,320.16-15,021.52

Finding the Fourth Proportional to 27,768.32, 38,320.16 and 15,021.52

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Solution

The fourth proportional to 27,768.32, 38,320.16 and 15,021.52 is: 20,729.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,768.32 : 38,320.16 = 15,021.52 : x
  2. Step 2: Convert to fraction form
    27,768.32/38,320.16 = 15,021.52/x
  3. Step 3: Cross multiply
    27,768.32x = 38,320.16 × 15,021.52
  4. Step 4: Simplify right side
    27,768.32x = 575,626,878.94
  5. Step 5: Solve for x
    x = 575,626,878.94/27,768.32
  6. Step 6: Final answer
    x = 20,729.63

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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.