Home / 28,678.42-39,609.34-19,102.53

Finding the Fourth Proportional to 28,678.42, 39,609.34 and 19,102.53

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Solution

The fourth proportional to 28,678.42, 39,609.34 and 19,102.53 is: 26,383.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,678.42 : 39,609.34 = 19,102.53 : x
  2. Step 2: Convert to fraction form
    28,678.42/39,609.34 = 19,102.53/x
  3. Step 3: Cross multiply
    28,678.42x = 39,609.34 × 19,102.53
  4. Step 4: Simplify right side
    28,678.42x = 756,638,706.41
  5. Step 5: Solve for x
    x = 756,638,706.41/28,678.42
  6. Step 6: Final answer
    x = 26,383.56

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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.