Home / 21,211.04-29,271.84-12,137.96

Finding the Fourth Proportional to 21,211.04, 29,271.84 and 12,137.96

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Solution

The fourth proportional to 21,211.04, 29,271.84 and 12,137.96 is: 16,750.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,211.04 : 29,271.84 = 12,137.96 : x
  2. Step 2: Convert to fraction form
    21,211.04/29,271.84 = 12,137.96/x
  3. Step 3: Cross multiply
    21,211.04x = 29,271.84 × 12,137.96
  4. Step 4: Simplify right side
    21,211.04x = 355,300,423.05
  5. Step 5: Solve for x
    x = 355,300,423.05/21,211.04
  6. Step 6: Final answer
    x = 16,750.73

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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.