Home / 28,511.57-39,345.26-15,764.42

Finding the Fourth Proportional to 28,511.57, 39,345.26 and 15,764.42

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Solution

The fourth proportional to 28,511.57, 39,345.26 and 15,764.42 is: 21,754.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,511.57 : 39,345.26 = 15,764.42 : x
  2. Step 2: Convert to fraction form
    28,511.57/39,345.26 = 15,764.42/x
  3. Step 3: Cross multiply
    28,511.57x = 39,345.26 × 15,764.42
  4. Step 4: Simplify right side
    28,511.57x = 620,255,390.60
  5. Step 5: Solve for x
    x = 620,255,390.60/28,511.57
  6. Step 6: Final answer
    x = 21,754.52

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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.