Home / 21,089.84-29,100.39-12,595.37

Finding the Fourth Proportional to 21,089.84, 29,100.39 and 12,595.37

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Solution

The fourth proportional to 21,089.84, 29,100.39 and 12,595.37 is: 17,379.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,089.84 : 29,100.39 = 12,595.37 : x
  2. Step 2: Convert to fraction form
    21,089.84/29,100.39 = 12,595.37/x
  3. Step 3: Cross multiply
    21,089.84x = 29,100.39 × 12,595.37
  4. Step 4: Simplify right side
    21,089.84x = 366,530,330.12
  5. Step 5: Solve for x
    x = 366,530,330.12/21,089.84
  6. Step 6: Final answer
    x = 17,379.47

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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.