Home / 12,927.21-17,841.19-7,890.35

Finding the Fourth Proportional to 12,927.21, 17,841.19 and 7,890.35

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Solution

The fourth proportional to 12,927.21, 17,841.19 and 7,890.35 is: 10,889.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,927.21 : 17,841.19 = 7,890.35 : x
  2. Step 2: Convert to fraction form
    12,927.21/17,841.19 = 7,890.35/x
  3. Step 3: Cross multiply
    12,927.21x = 17,841.19 × 7,890.35
  4. Step 4: Simplify right side
    12,927.21x = 140,773,202.42
  5. Step 5: Solve for x
    x = 140,773,202.42/12,927.21
  6. Step 6: Final answer
    x = 10,889.68

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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.