Home / 15,493.44-21,376.80-9,907.68

Finding the Fourth Proportional to 15,493.44, 21,376.80 and 9,907.68

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Solution

The fourth proportional to 15,493.44, 21,376.80 and 9,907.68 is: 13,669.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,493.44 : 21,376.80 = 9,907.68 : x
  2. Step 2: Convert to fraction form
    15,493.44/21,376.80 = 9,907.68/x
  3. Step 3: Cross multiply
    15,493.44x = 21,376.80 × 9,907.68
  4. Step 4: Simplify right side
    15,493.44x = 211,794,493.82
  5. Step 5: Solve for x
    x = 211,794,493.82/15,493.44
  6. Step 6: Final answer
    x = 13,669.95

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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.