Home / 28,415.42-39,212.88-16,478.45

Finding the Fourth Proportional to 28,415.42, 39,212.88 and 16,478.45

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Solution

The fourth proportional to 28,415.42, 39,212.88 and 16,478.45 is: 22,740.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,415.42 : 39,212.88 = 16,478.45 : x
  2. Step 2: Convert to fraction form
    28,415.42/39,212.88 = 16,478.45/x
  3. Step 3: Cross multiply
    28,415.42x = 39,212.88 × 16,478.45
  4. Step 4: Simplify right side
    28,415.42x = 646,167,286.37
  5. Step 5: Solve for x
    x = 646,167,286.37/28,415.42
  6. Step 6: Final answer
    x = 22,740.03

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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.