Home / 21,100.67-29,092.45-13,533.65

Finding the Fourth Proportional to 21,100.67, 29,092.45 and 13,533.65

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Solution

The fourth proportional to 21,100.67, 29,092.45 and 13,533.65 is: 18,659.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,100.67 : 29,092.45 = 13,533.65 : x
  2. Step 2: Convert to fraction form
    21,100.67/29,092.45 = 13,533.65/x
  3. Step 3: Cross multiply
    21,100.67x = 29,092.45 × 13,533.65
  4. Step 4: Simplify right side
    21,100.67x = 393,727,035.94
  5. Step 5: Solve for x
    x = 393,727,035.94/21,100.67
  6. Step 6: Final answer
    x = 18,659.46

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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.