Home / 18,821.64-25,973.92-10,438.12

Finding the Fourth Proportional to 18,821.64, 25,973.92 and 10,438.12

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Solution

The fourth proportional to 18,821.64, 25,973.92 and 10,438.12 is: 14,404.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,821.64 : 25,973.92 = 10,438.12 : x
  2. Step 2: Convert to fraction form
    18,821.64/25,973.92 = 10,438.12/x
  3. Step 3: Cross multiply
    18,821.64x = 25,973.92 × 10,438.12
  4. Step 4: Simplify right side
    18,821.64x = 271,118,893.83
  5. Step 5: Solve for x
    x = 271,118,893.83/18,821.64
  6. Step 6: Final answer
    x = 14,404.64

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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.