Home / 21,727.86-30,002.85-13,784.19

Finding the Fourth Proportional to 21,727.86, 30,002.85 and 13,784.19

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Solution

The fourth proportional to 21,727.86, 30,002.85 and 13,784.19 is: 19,033.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,727.86 : 30,002.85 = 13,784.19 : x
  2. Step 2: Convert to fraction form
    21,727.86/30,002.85 = 13,784.19/x
  3. Step 3: Cross multiply
    21,727.86x = 30,002.85 × 13,784.19
  4. Step 4: Simplify right side
    21,727.86x = 413,564,984.94
  5. Step 5: Solve for x
    x = 413,564,984.94/21,727.86
  6. Step 6: Final answer
    x = 19,033.86

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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.