Home / 18,899.96-26,085.54-12,515.28

Finding the Fourth Proportional to 18,899.96, 26,085.54 and 12,515.28

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Solution

The fourth proportional to 18,899.96, 26,085.54 and 12,515.28 is: 17,273.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,899.96 : 26,085.54 = 12,515.28 : x
  2. Step 2: Convert to fraction form
    18,899.96/26,085.54 = 12,515.28/x
  3. Step 3: Cross multiply
    18,899.96x = 26,085.54 × 12,515.28
  4. Step 4: Simplify right side
    18,899.96x = 326,467,837.05
  5. Step 5: Solve for x
    x = 326,467,837.05/18,899.96
  6. Step 6: Final answer
    x = 17,273.47

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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.