Home / 21,555.64-29,746.60-12,124

Finding the Fourth Proportional to 21,555.64, 29,746.60 and 12,124

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Solution

The fourth proportional to 21,555.64, 29,746.60 and 12,124 is: 16,731.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,555.64 : 29,746.60 = 12,124 : x
  2. Step 2: Convert to fraction form
    21,555.64/29,746.60 = 12,124/x
  3. Step 3: Cross multiply
    21,555.64x = 29,746.60 × 12,124
  4. Step 4: Simplify right side
    21,555.64x = 360,647,778.40
  5. Step 5: Solve for x
    x = 360,647,778.40/21,555.64
  6. Step 6: Final answer
    x = 16,731.02

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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.