Home / 27,782.24-38,344.44-15,686.40

Finding the Fourth Proportional to 27,782.24, 38,344.44 and 15,686.40

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Solution

The fourth proportional to 27,782.24, 38,344.44 and 15,686.40 is: 21,650.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,782.24 : 38,344.44 = 15,686.40 : x
  2. Step 2: Convert to fraction form
    27,782.24/38,344.44 = 15,686.40/x
  3. Step 3: Cross multiply
    27,782.24x = 38,344.44 × 15,686.40
  4. Step 4: Simplify right side
    27,782.24x = 601,486,223.62
  5. Step 5: Solve for x
    x = 601,486,223.62/27,782.24
  6. Step 6: Final answer
    x = 21,650.03

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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.