Home / 21,324.87-29,430.12-11,765.64

Finding the Fourth Proportional to 21,324.87, 29,430.12 and 11,765.64

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Solution

The fourth proportional to 21,324.87, 29,430.12 and 11,765.64 is: 16,237.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,324.87 : 29,430.12 = 11,765.64 : x
  2. Step 2: Convert to fraction form
    21,324.87/29,430.12 = 11,765.64/x
  3. Step 3: Cross multiply
    21,324.87x = 29,430.12 × 11,765.64
  4. Step 4: Simplify right side
    21,324.87x = 346,264,197.08
  5. Step 5: Solve for x
    x = 346,264,197.08/21,324.87
  6. Step 6: Final answer
    x = 16,237.58

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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.