Home / 28,351.06-39,129.26-16,421.66

Finding the Fourth Proportional to 28,351.06, 39,129.26 and 16,421.66

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Solution

The fourth proportional to 28,351.06, 39,129.26 and 16,421.66 is: 22,664.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,351.06 : 39,129.26 = 16,421.66 : x
  2. Step 2: Convert to fraction form
    28,351.06/39,129.26 = 16,421.66/x
  3. Step 3: Cross multiply
    28,351.06x = 39,129.26 × 16,421.66
  4. Step 4: Simplify right side
    28,351.06x = 642,567,403.77
  5. Step 5: Solve for x
    x = 642,567,403.77/28,351.06
  6. Step 6: Final answer
    x = 22,664.67

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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.