Home / 15,455.34-21,326.43-9,166.50

Finding the Fourth Proportional to 15,455.34, 21,326.43 and 9,166.50

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Solution

The fourth proportional to 15,455.34, 21,326.43 and 9,166.50 is: 12,648.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,455.34 : 21,326.43 = 9,166.50 : x
  2. Step 2: Convert to fraction form
    15,455.34/21,326.43 = 9,166.50/x
  3. Step 3: Cross multiply
    15,455.34x = 21,326.43 × 9,166.50
  4. Step 4: Simplify right side
    15,455.34x = 195,488,720.60
  5. Step 5: Solve for x
    x = 195,488,720.60/15,455.34
  6. Step 6: Final answer
    x = 12,648.62

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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.