Home / 12,207.55-16,848.21-7,731.72

Finding the Fourth Proportional to 12,207.55, 16,848.21 and 7,731.72

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Solution

The fourth proportional to 12,207.55, 16,848.21 and 7,731.72 is: 10,670.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,207.55 : 16,848.21 = 7,731.72 : x
  2. Step 2: Convert to fraction form
    12,207.55/16,848.21 = 7,731.72/x
  3. Step 3: Cross multiply
    12,207.55x = 16,848.21 × 7,731.72
  4. Step 4: Simplify right side
    12,207.55x = 130,265,557.98
  5. Step 5: Solve for x
    x = 130,265,557.98/12,207.55
  6. Step 6: Final answer
    x = 10,670.90

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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.