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Finding the Fourth Proportional to 12,702.09, 19,060.02 and 5,307.20

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Solution

The fourth proportional to 12,702.09, 19,060.02 and 5,307.20 is: 7,963.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,702.09 : 19,060.02 = 5,307.20 : x
  2. Step 2: Convert to fraction form
    12,702.09/19,060.02 = 5,307.20/x
  3. Step 3: Cross multiply
    12,702.09x = 19,060.02 × 5,307.20
  4. Step 4: Simplify right side
    12,702.09x = 101,155,242.84
  5. Step 5: Solve for x
    x = 101,155,242.84/12,702.09
  6. Step 6: Final answer
    x = 7,963.67

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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.