Home / 12,817.20-19,225.80-6,912.30

Finding the Fourth Proportional to 12,817.20, 19,225.80 and 6,912.30

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Solution

The fourth proportional to 12,817.20, 19,225.80 and 6,912.30 is: 10,368.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,817.20 : 19,225.80 = 6,912.30 : x
  2. Step 2: Convert to fraction form
    12,817.20/19,225.80 = 6,912.30/x
  3. Step 3: Cross multiply
    12,817.20x = 19,225.80 × 6,912.30
  4. Step 4: Simplify right side
    12,817.20x = 132,894,497.34
  5. Step 5: Solve for x
    x = 132,894,497.34/12,817.20
  6. Step 6: Final answer
    x = 10,368.45

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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.