Home / 21,475.02-29,635.86-12,975.96

Finding the Fourth Proportional to 21,475.02, 29,635.86 and 12,975.96

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Solution

The fourth proportional to 21,475.02, 29,635.86 and 12,975.96 is: 17,907.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,475.02 : 29,635.86 = 12,975.96 : x
  2. Step 2: Convert to fraction form
    21,475.02/29,635.86 = 12,975.96/x
  3. Step 3: Cross multiply
    21,475.02x = 29,635.86 × 12,975.96
  4. Step 4: Simplify right side
    21,475.02x = 384,553,733.93
  5. Step 5: Solve for x
    x = 384,553,733.93/21,475.02
  6. Step 6: Final answer
    x = 17,907.03

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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.