Home / 12,085.88-18,128.81-4,295.00

Finding the Fourth Proportional to 12,085.88, 18,128.81 and 4,295.00

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Solution

The fourth proportional to 12,085.88, 18,128.81 and 4,295.00 is: 6,442.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,085.88 : 18,128.81 = 4,295.00 : x
  2. Step 2: Convert to fraction form
    12,085.88/18,128.81 = 4,295.00/x
  3. Step 3: Cross multiply
    12,085.88x = 18,128.81 × 4,295.00
  4. Step 4: Simplify right side
    12,085.88x = 77,863,159.04
  5. Step 5: Solve for x
    x = 77,863,159.04/12,085.88
  6. Step 6: Final answer
    x = 6,442.49

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Half scale
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Double scale
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Similar ratio
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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.