Home / 21,703.50-29,951.10-12,271.86

Finding the Fourth Proportional to 21,703.50, 29,951.10 and 12,271.86

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Solution

The fourth proportional to 21,703.50, 29,951.10 and 12,271.86 is: 16,935.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,703.50 : 29,951.10 = 12,271.86 : x
  2. Step 2: Convert to fraction form
    21,703.50/29,951.10 = 12,271.86/x
  3. Step 3: Cross multiply
    21,703.50x = 29,951.10 × 12,271.86
  4. Step 4: Simplify right side
    21,703.50x = 367,555,706.05
  5. Step 5: Solve for x
    x = 367,555,706.05/21,703.50
  6. Step 6: Final answer
    x = 16,935.32

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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.