Home / 21,438.86-29,585.68-12,007.58

Finding the Fourth Proportional to 21,438.86, 29,585.68 and 12,007.58

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Solution

The fourth proportional to 21,438.86, 29,585.68 and 12,007.58 is: 16,570.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,438.86 : 29,585.68 = 12,007.58 : x
  2. Step 2: Convert to fraction form
    21,438.86/29,585.68 = 12,007.58/x
  3. Step 3: Cross multiply
    21,438.86x = 29,585.68 × 12,007.58
  4. Step 4: Simplify right side
    21,438.86x = 355,252,419.45
  5. Step 5: Solve for x
    x = 355,252,419.45/21,438.86
  6. Step 6: Final answer
    x = 16,570.49

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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.