Home / 27,755.52-38,303.64-15,820.80

Finding the Fourth Proportional to 27,755.52, 38,303.64 and 15,820.80

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Solution

The fourth proportional to 27,755.52, 38,303.64 and 15,820.80 is: 21,833.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,755.52 : 38,303.64 = 15,820.80 : x
  2. Step 2: Convert to fraction form
    27,755.52/38,303.64 = 15,820.80/x
  3. Step 3: Cross multiply
    27,755.52x = 38,303.64 × 15,820.80
  4. Step 4: Simplify right side
    27,755.52x = 605,994,227.71
  5. Step 5: Solve for x
    x = 605,994,227.71/27,755.52
  6. Step 6: Final answer
    x = 21,833.29

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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.