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Finding the Fourth Proportional to 13,200.79, 19,801.23 and 3,340.07

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Solution

The fourth proportional to 13,200.79, 19,801.23 and 3,340.07 is: 5,010.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,200.79 : 19,801.23 = 3,340.07 : x
  2. Step 2: Convert to fraction form
    13,200.79/19,801.23 = 3,340.07/x
  3. Step 3: Cross multiply
    13,200.79x = 19,801.23 × 3,340.07
  4. Step 4: Simplify right side
    13,200.79x = 66,137,466.40
  5. Step 5: Solve for x
    x = 66,137,466.40/13,200.79
  6. Step 6: Final answer
    x = 5,010.11

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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.