Home / 21,211.03-29,273.81-12,258.61

Finding the Fourth Proportional to 21,211.03, 29,273.81 and 12,258.61

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Solution

The fourth proportional to 21,211.03, 29,273.81 and 12,258.61 is: 16,918.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,211.03 : 29,273.81 = 12,258.61 : x
  2. Step 2: Convert to fraction form
    21,211.03/29,273.81 = 12,258.61/x
  3. Step 3: Cross multiply
    21,211.03x = 29,273.81 × 12,258.61
  4. Step 4: Simplify right side
    21,211.03x = 358,856,085.53
  5. Step 5: Solve for x
    x = 358,856,085.53/21,211.03
  6. Step 6: Final answer
    x = 16,918.37

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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.