Home / 12,972.76-19,459.38-4,207.64

Finding the Fourth Proportional to 12,972.76, 19,459.38 and 4,207.64

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Solution

The fourth proportional to 12,972.76, 19,459.38 and 4,207.64 is: 6,311.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,972.76 : 19,459.38 = 4,207.64 : x
  2. Step 2: Convert to fraction form
    12,972.76/19,459.38 = 4,207.64/x
  3. Step 3: Cross multiply
    12,972.76x = 19,459.38 × 4,207.64
  4. Step 4: Simplify right side
    12,972.76x = 81,878,065.66
  5. Step 5: Solve for x
    x = 81,878,065.66/12,972.76
  6. Step 6: Final answer
    x = 6,311.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.