Home / 28,514.49-42,768.08-11,871.42

Finding the Fourth Proportional to 28,514.49, 42,768.08 and 11,871.42

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Solution

The fourth proportional to 28,514.49, 42,768.08 and 11,871.42 is: 17,805.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,514.49 : 42,768.08 = 11,871.42 : x
  2. Step 2: Convert to fraction form
    28,514.49/42,768.08 = 11,871.42/x
  3. Step 3: Cross multiply
    28,514.49x = 42,768.08 × 11,871.42
  4. Step 4: Simplify right side
    28,514.49x = 507,717,840.27
  5. Step 5: Solve for x
    x = 507,717,840.27/28,514.49
  6. Step 6: Final answer
    x = 17,805.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.