Home / 27,785.70-38,344.66-15,686.87

Finding the Fourth Proportional to 27,785.70, 38,344.66 and 15,686.87

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Solution

The fourth proportional to 27,785.70, 38,344.66 and 15,686.87 is: 21,648.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,785.70 : 38,344.66 = 15,686.87 : x
  2. Step 2: Convert to fraction form
    27,785.70/38,344.66 = 15,686.87/x
  3. Step 3: Cross multiply
    27,785.70x = 38,344.66 × 15,686.87
  4. Step 4: Simplify right side
    27,785.70x = 601,507,465.67
  5. Step 5: Solve for x
    x = 601,507,465.67/27,785.70
  6. Step 6: Final answer
    x = 21,648.09

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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.