Home / 21,440.12-29,587.46-12,493.76

Finding the Fourth Proportional to 21,440.12, 29,587.46 and 12,493.76

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Solution

The fourth proportional to 21,440.12, 29,587.46 and 12,493.76 is: 17,241.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,440.12 : 29,587.46 = 12,493.76 : x
  2. Step 2: Convert to fraction form
    21,440.12/29,587.46 = 12,493.76/x
  3. Step 3: Cross multiply
    21,440.12x = 29,587.46 × 12,493.76
  4. Step 4: Simplify right side
    21,440.12x = 369,658,413.84
  5. Step 5: Solve for x
    x = 369,658,413.84/21,440.12
  6. Step 6: Final answer
    x = 17,241.44

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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.