Home / 28,379.87-39,121.43-23,335.34

Finding the Fourth Proportional to 28,379.87, 39,121.43 and 23,335.34

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Solution

The fourth proportional to 28,379.87, 39,121.43 and 23,335.34 is: 32,167.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,379.87 : 39,121.43 = 23,335.34 : x
  2. Step 2: Convert to fraction form
    28,379.87/39,121.43 = 23,335.34/x
  3. Step 3: Cross multiply
    28,379.87x = 39,121.43 × 23,335.34
  4. Step 4: Simplify right side
    28,379.87x = 912,911,909.37
  5. Step 5: Solve for x
    x = 912,911,909.37/28,379.87
  6. Step 6: Final answer
    x = 32,167.59

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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.