Home / 12,851.12-19,276.48-4,085.91

Finding the Fourth Proportional to 12,851.12, 19,276.48 and 4,085.91

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Solution

The fourth proportional to 12,851.12, 19,276.48 and 4,085.91 is: 6,128.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,851.12 : 19,276.48 = 4,085.91 : x
  2. Step 2: Convert to fraction form
    12,851.12/19,276.48 = 4,085.91/x
  3. Step 3: Cross multiply
    12,851.12x = 19,276.48 × 4,085.91
  4. Step 4: Simplify right side
    12,851.12x = 78,761,967.50
  5. Step 5: Solve for x
    x = 78,761,967.50/12,851.12
  6. Step 6: Final answer
    x = 6,128.80

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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.