Home / 21,773.61-30,048.57-12,821.49

Finding the Fourth Proportional to 21,773.61, 30,048.57 and 12,821.49

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Solution

The fourth proportional to 21,773.61, 30,048.57 and 12,821.49 is: 17,694.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,773.61 : 30,048.57 = 12,821.49 : x
  2. Step 2: Convert to fraction form
    21,773.61/30,048.57 = 12,821.49/x
  3. Step 3: Cross multiply
    21,773.61x = 30,048.57 × 12,821.49
  4. Step 4: Simplify right side
    21,773.61x = 385,267,439.77
  5. Step 5: Solve for x
    x = 385,267,439.77/21,773.61
  6. Step 6: Final answer
    x = 17,694.24

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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.