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Finding the Fourth Proportional to 13,223.20, 17,868.60 and 13,223.20

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Solution

The fourth proportional to 13,223.20, 17,868.60 and 13,223.20 is: 17,868.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,223.20 : 17,868.60 = 13,223.20 : x
  2. Step 2: Convert to fraction form
    13,223.20/17,868.60 = 13,223.20/x
  3. Step 3: Cross multiply
    13,223.20x = 17,868.60 × 13,223.20
  4. Step 4: Simplify right side
    13,223.20x = 236,280,071.52
  5. Step 5: Solve for x
    x = 236,280,071.52/13,223.20
  6. Step 6: Final answer
    x = 17,868.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.