Home / 18,970.35-26,144.17-15,205.97

Finding the Fourth Proportional to 18,970.35, 26,144.17 and 15,205.97

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Solution

The fourth proportional to 18,970.35, 26,144.17 and 15,205.97 is: 20,956.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,970.35 : 26,144.17 = 15,205.97 : x
  2. Step 2: Convert to fraction form
    18,970.35/26,144.17 = 15,205.97/x
  3. Step 3: Cross multiply
    18,970.35x = 26,144.17 × 15,205.97
  4. Step 4: Simplify right side
    18,970.35x = 397,547,295.96
  5. Step 5: Solve for x
    x = 397,547,295.96/18,970.35
  6. Step 6: Final answer
    x = 20,956.24

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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.