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Finding the Fourth Proportional to 12,492.90, 17,221.94 and 9,503.54

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Solution

The fourth proportional to 12,492.90, 17,221.94 and 9,503.54 is: 13,101.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,492.90 : 17,221.94 = 9,503.54 : x
  2. Step 2: Convert to fraction form
    12,492.90/17,221.94 = 9,503.54/x
  3. Step 3: Cross multiply
    12,492.90x = 17,221.94 × 9,503.54
  4. Step 4: Simplify right side
    12,492.90x = 163,669,413.21
  5. Step 5: Solve for x
    x = 163,669,413.21/12,492.90
  6. Step 6: Final answer
    x = 13,101.00

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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.