Home / 21,271.92-29,355.04-11,840.28

Finding the Fourth Proportional to 21,271.92, 29,355.04 and 11,840.28

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Solution

The fourth proportional to 21,271.92, 29,355.04 and 11,840.28 is: 16,339.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,271.92 : 29,355.04 = 11,840.28 : x
  2. Step 2: Convert to fraction form
    21,271.92/29,355.04 = 11,840.28/x
  3. Step 3: Cross multiply
    21,271.92x = 29,355.04 × 11,840.28
  4. Step 4: Simplify right side
    21,271.92x = 347,571,893.01
  5. Step 5: Solve for x
    x = 347,571,893.01/21,271.92
  6. Step 6: Final answer
    x = 16,339.47

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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.