Home / 18,971.55-26,180.69-11,018.43

Finding the Fourth Proportional to 18,971.55, 26,180.69 and 11,018.43

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Solution

The fourth proportional to 18,971.55, 26,180.69 and 11,018.43 is: 15,205.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,971.55 : 26,180.69 = 11,018.43 : x
  2. Step 2: Convert to fraction form
    18,971.55/26,180.69 = 11,018.43/x
  3. Step 3: Cross multiply
    18,971.55x = 26,180.69 × 11,018.43
  4. Step 4: Simplify right side
    18,971.55x = 288,470,045.02
  5. Step 5: Solve for x
    x = 288,470,045.02/18,971.55
  6. Step 6: Final answer
    x = 15,205.40

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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.