Home / 21,438.42-29,585.03-12,007.05

Finding the Fourth Proportional to 21,438.42, 29,585.03 and 12,007.05

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Solution

The fourth proportional to 21,438.42, 29,585.03 and 12,007.05 is: 16,569.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,438.42 : 29,585.03 = 12,007.05 : x
  2. Step 2: Convert to fraction form
    21,438.42/29,585.03 = 12,007.05/x
  3. Step 3: Cross multiply
    21,438.42x = 29,585.03 × 12,007.05
  4. Step 4: Simplify right side
    21,438.42x = 355,228,874.43
  5. Step 5: Solve for x
    x = 355,228,874.43/21,438.42
  6. Step 6: Final answer
    x = 16,569.73

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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.