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Finding the Fourth Proportional to 10,603.88, 14,647.13 and 8,070.61

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Solution

The fourth proportional to 10,603.88, 14,647.13 and 8,070.61 is: 11,147.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,603.88 : 14,647.13 = 8,070.61 : x
  2. Step 2: Convert to fraction form
    10,603.88/14,647.13 = 8,070.61/x
  3. Step 3: Cross multiply
    10,603.88x = 14,647.13 × 8,070.61
  4. Step 4: Simplify right side
    10,603.88x = 118,211,273.85
  5. Step 5: Solve for x
    x = 118,211,273.85/10,603.88
  6. Step 6: Final answer
    x = 11,147.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.