Home / 28,405.14-39,200.85-15,658.26

Finding the Fourth Proportional to 28,405.14, 39,200.85 and 15,658.26

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Solution

The fourth proportional to 28,405.14, 39,200.85 and 15,658.26 is: 21,609.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,405.14 : 39,200.85 = 15,658.26 : x
  2. Step 2: Convert to fraction form
    28,405.14/39,200.85 = 15,658.26/x
  3. Step 3: Cross multiply
    28,405.14x = 39,200.85 × 15,658.26
  4. Step 4: Simplify right side
    28,405.14x = 613,817,101.52
  5. Step 5: Solve for x
    x = 613,817,101.52/28,405.14
  6. Step 6: Final answer
    x = 21,609.37

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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.