Home / 12,639.72-17,442.90-7,051.08

Finding the Fourth Proportional to 12,639.72, 17,442.90 and 7,051.08

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Solution

The fourth proportional to 12,639.72, 17,442.90 and 7,051.08 is: 9,730.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,639.72 : 17,442.90 = 7,051.08 : x
  2. Step 2: Convert to fraction form
    12,639.72/17,442.90 = 7,051.08/x
  3. Step 3: Cross multiply
    12,639.72x = 17,442.90 × 7,051.08
  4. Step 4: Simplify right side
    12,639.72x = 122,991,283.33
  5. Step 5: Solve for x
    x = 122,991,283.33/12,639.72
  6. Step 6: Final answer
    x = 9,730.54

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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.