Home / 21,212.67-29,270.06-12,258.57

Finding the Fourth Proportional to 21,212.67, 29,270.06 and 12,258.57

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Solution

The fourth proportional to 21,212.67, 29,270.06 and 12,258.57 is: 16,914.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,212.67 : 29,270.06 = 12,258.57 : x
  2. Step 2: Convert to fraction form
    21,212.67/29,270.06 = 12,258.57/x
  3. Step 3: Cross multiply
    21,212.67x = 29,270.06 × 12,258.57
  4. Step 4: Simplify right side
    21,212.67x = 358,809,018.12
  5. Step 5: Solve for x
    x = 358,809,018.12/21,212.67
  6. Step 6: Final answer
    x = 16,914.84

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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.