Home / 21,431.52-29,576.88-12,003.12

Finding the Fourth Proportional to 21,431.52, 29,576.88 and 12,003.12

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Solution

The fourth proportional to 21,431.52, 29,576.88 and 12,003.12 is: 16,565.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,431.52 : 29,576.88 = 12,003.12 : x
  2. Step 2: Convert to fraction form
    21,431.52/29,576.88 = 12,003.12/x
  3. Step 3: Cross multiply
    21,431.52x = 29,576.88 × 12,003.12
  4. Step 4: Simplify right side
    21,431.52x = 355,014,839.87
  5. Step 5: Solve for x
    x = 355,014,839.87/21,431.52
  6. Step 6: Final answer
    x = 16,565.08

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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.