Home / 21,504.24-29,676.06-12,428.91

Finding the Fourth Proportional to 21,504.24, 29,676.06 and 12,428.91

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Solution

The fourth proportional to 21,504.24, 29,676.06 and 12,428.91 is: 17,152.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,504.24 : 29,676.06 = 12,428.91 : x
  2. Step 2: Convert to fraction form
    21,504.24/29,676.06 = 12,428.91/x
  3. Step 3: Cross multiply
    21,504.24x = 29,676.06 × 12,428.91
  4. Step 4: Simplify right side
    21,504.24x = 368,841,078.89
  5. Step 5: Solve for x
    x = 368,841,078.89/21,504.24
  6. Step 6: Final answer
    x = 17,152.02

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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.