Home / 12,883.10-19,295.31-7,678.22

Finding the Fourth Proportional to 12,883.10, 19,295.31 and 7,678.22

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Solution

The fourth proportional to 12,883.10, 19,295.31 and 7,678.22 is: 11,499.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,883.10 : 19,295.31 = 7,678.22 : x
  2. Step 2: Convert to fraction form
    12,883.10/19,295.31 = 7,678.22/x
  3. Step 3: Cross multiply
    12,883.10x = 19,295.31 × 7,678.22
  4. Step 4: Simplify right side
    12,883.10x = 148,153,635.15
  5. Step 5: Solve for x
    x = 148,153,635.15/12,883.10
  6. Step 6: Final answer
    x = 11,499.84

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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.