Home / 14,157.27-21,145.38-12,821.08

Finding the Fourth Proportional to 14,157.27, 21,145.38 and 12,821.08

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Solution

The fourth proportional to 14,157.27, 21,145.38 and 12,821.08 is: 19,149.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,157.27 : 21,145.38 = 12,821.08 : x
  2. Step 2: Convert to fraction form
    14,157.27/21,145.38 = 12,821.08/x
  3. Step 3: Cross multiply
    14,157.27x = 21,145.38 × 12,821.08
  4. Step 4: Simplify right side
    14,157.27x = 271,106,438.78
  5. Step 5: Solve for x
    x = 271,106,438.78/14,157.27
  6. Step 6: Final answer
    x = 19,149.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.