Home / 21,125.76-31,675.27-17,993.49

Finding the Fourth Proportional to 21,125.76, 31,675.27 and 17,993.49

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Solution

The fourth proportional to 21,125.76, 31,675.27 and 17,993.49 is: 26,978.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,125.76 : 31,675.27 = 17,993.49 : x
  2. Step 2: Convert to fraction form
    21,125.76/31,675.27 = 17,993.49/x
  3. Step 3: Cross multiply
    21,125.76x = 31,675.27 × 17,993.49
  4. Step 4: Simplify right side
    21,125.76x = 569,948,653.99
  5. Step 5: Solve for x
    x = 569,948,653.99/21,125.76
  6. Step 6: Final answer
    x = 26,978.85

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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.