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Finding the Fourth Proportional to 12,347.70, 18,426.57 and 11,035.50

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Solution

The fourth proportional to 12,347.70, 18,426.57 and 11,035.50 is: 16,468.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,347.70 : 18,426.57 = 11,035.50 : x
  2. Step 2: Convert to fraction form
    12,347.70/18,426.57 = 11,035.50/x
  3. Step 3: Cross multiply
    12,347.70x = 18,426.57 × 11,035.50
  4. Step 4: Simplify right side
    12,347.70x = 203,346,413.24
  5. Step 5: Solve for x
    x = 203,346,413.24/12,347.70
  6. Step 6: Final answer
    x = 16,468.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.