Home / 12,920.26-19,355.01-7,356.64

Finding the Fourth Proportional to 12,920.26, 19,355.01 and 7,356.64

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Solution

The fourth proportional to 12,920.26, 19,355.01 and 7,356.64 is: 11,020.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,920.26 : 19,355.01 = 7,356.64 : x
  2. Step 2: Convert to fraction form
    12,920.26/19,355.01 = 7,356.64/x
  3. Step 3: Cross multiply
    12,920.26x = 19,355.01 × 7,356.64
  4. Step 4: Simplify right side
    12,920.26x = 142,387,840.77
  5. Step 5: Solve for x
    x = 142,387,840.77/12,920.26
  6. Step 6: Final answer
    x = 11,020.51

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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.