Home / 20,924.36-28,883.48-13,860.36

Finding the Fourth Proportional to 20,924.36, 28,883.48 and 13,860.36

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Solution

The fourth proportional to 20,924.36, 28,883.48 and 13,860.36 is: 19,132.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,924.36 : 28,883.48 = 13,860.36 : x
  2. Step 2: Convert to fraction form
    20,924.36/28,883.48 = 13,860.36/x
  3. Step 3: Cross multiply
    20,924.36x = 28,883.48 × 13,860.36
  4. Step 4: Simplify right side
    20,924.36x = 400,335,430.85
  5. Step 5: Solve for x
    x = 400,335,430.85/20,924.36
  6. Step 6: Final answer
    x = 19,132.51

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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.