Home / 21,657.67-29,887.84-12,705.33

Finding the Fourth Proportional to 21,657.67, 29,887.84 and 12,705.33

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Solution

The fourth proportional to 21,657.67, 29,887.84 and 12,705.33 is: 17,533.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,657.67 : 29,887.84 = 12,705.33 : x
  2. Step 2: Convert to fraction form
    21,657.67/29,887.84 = 12,705.33/x
  3. Step 3: Cross multiply
    21,657.67x = 29,887.84 × 12,705.33
  4. Step 4: Simplify right side
    21,657.67x = 379,734,702.52
  5. Step 5: Solve for x
    x = 379,734,702.52/21,657.67
  6. Step 6: Final answer
    x = 17,533.50

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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.