Home / 21,004.69-31,455.33-13,586.44

Finding the Fourth Proportional to 21,004.69, 31,455.33 and 13,586.44

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Solution

The fourth proportional to 21,004.69, 31,455.33 and 13,586.44 is: 20,346.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,004.69 : 31,455.33 = 13,586.44 : x
  2. Step 2: Convert to fraction form
    21,004.69/31,455.33 = 13,586.44/x
  3. Step 3: Cross multiply
    21,004.69x = 31,455.33 × 13,586.44
  4. Step 4: Simplify right side
    21,004.69x = 427,365,953.73
  5. Step 5: Solve for x
    x = 427,365,953.73/21,004.69
  6. Step 6: Final answer
    x = 20,346.22

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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.