Home / 28,239.40-42,345.42-8,514.28

Finding the Fourth Proportional to 28,239.40, 42,345.42 and 8,514.28

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Solution

The fourth proportional to 28,239.40, 42,345.42 and 8,514.28 is: 12,767.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,239.40 : 42,345.42 = 8,514.28 : x
  2. Step 2: Convert to fraction form
    28,239.40/42,345.42 = 8,514.28/x
  3. Step 3: Cross multiply
    28,239.40x = 42,345.42 × 8,514.28
  4. Step 4: Simplify right side
    28,239.40x = 360,540,762.60
  5. Step 5: Solve for x
    x = 360,540,762.60/28,239.40
  6. Step 6: Final answer
    x = 12,767.30

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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.