Home / 15,790.92-21,676.98-15,643.32

Finding the Fourth Proportional to 15,790.92, 21,676.98 and 15,643.32

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Solution

The fourth proportional to 15,790.92, 21,676.98 and 15,643.32 is: 21,474.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,790.92 : 21,676.98 = 15,643.32 : x
  2. Step 2: Convert to fraction form
    15,790.92/21,676.98 = 15,643.32/x
  3. Step 3: Cross multiply
    15,790.92x = 21,676.98 × 15,643.32
  4. Step 4: Simplify right side
    15,790.92x = 339,099,934.77
  5. Step 5: Solve for x
    x = 339,099,934.77/15,790.92
  6. Step 6: Final answer
    x = 21,474.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.