Home / 18,896.95-26,081.40-12,512.28

Finding the Fourth Proportional to 18,896.95, 26,081.40 and 12,512.28

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Solution

The fourth proportional to 18,896.95, 26,081.40 and 12,512.28 is: 17,269.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,896.95 : 26,081.40 = 12,512.28 : x
  2. Step 2: Convert to fraction form
    18,896.95/26,081.40 = 12,512.28/x
  3. Step 3: Cross multiply
    18,896.95x = 26,081.40 × 12,512.28
  4. Step 4: Simplify right side
    18,896.95x = 326,337,779.59
  5. Step 5: Solve for x
    x = 326,337,779.59/18,896.95
  6. Step 6: Final answer
    x = 17,269.34

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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.