Home / 21,025.58-29,015.11-11,465.65

Finding the Fourth Proportional to 21,025.58, 29,015.11 and 11,465.65

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Solution

The fourth proportional to 21,025.58, 29,015.11 and 11,465.65 is: 15,822.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,025.58 : 29,015.11 = 11,465.65 : x
  2. Step 2: Convert to fraction form
    21,025.58/29,015.11 = 11,465.65/x
  3. Step 3: Cross multiply
    21,025.58x = 29,015.11 × 11,465.65
  4. Step 4: Simplify right side
    21,025.58x = 332,677,146.57
  5. Step 5: Solve for x
    x = 332,677,146.57/21,025.58
  6. Step 6: Final answer
    x = 15,822.50

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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.