Home / 13,143.12-19,702.80-4,817.22

Finding the Fourth Proportional to 13,143.12, 19,702.80 and 4,817.22

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Solution

The fourth proportional to 13,143.12, 19,702.80 and 4,817.22 is: 7,221.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,143.12 : 19,702.80 = 4,817.22 : x
  2. Step 2: Convert to fraction form
    13,143.12/19,702.80 = 4,817.22/x
  3. Step 3: Cross multiply
    13,143.12x = 19,702.80 × 4,817.22
  4. Step 4: Simplify right side
    13,143.12x = 94,912,722.22
  5. Step 5: Solve for x
    x = 94,912,722.22/13,143.12
  6. Step 6: Final answer
    x = 7,221.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.