Home / 27,761.57-38,303.39-15,820.55

Finding the Fourth Proportional to 27,761.57, 38,303.39 and 15,820.55

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Solution

The fourth proportional to 27,761.57, 38,303.39 and 15,820.55 is: 21,828.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,761.57 : 38,303.39 = 15,820.55 : x
  2. Step 2: Convert to fraction form
    27,761.57/38,303.39 = 15,820.55/x
  3. Step 3: Cross multiply
    27,761.57x = 38,303.39 × 15,820.55
  4. Step 4: Simplify right side
    27,761.57x = 605,980,617.56
  5. Step 5: Solve for x
    x = 605,980,617.56/27,761.57
  6. Step 6: Final answer
    x = 21,828.04

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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.