Home / 20,894.09-31,341.43-6,855.22

Finding the Fourth Proportional to 20,894.09, 31,341.43 and 6,855.22

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Solution

The fourth proportional to 20,894.09, 31,341.43 and 6,855.22 is: 10,282.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,894.09 : 31,341.43 = 6,855.22 : x
  2. Step 2: Convert to fraction form
    20,894.09/31,341.43 = 6,855.22/x
  3. Step 3: Cross multiply
    20,894.09x = 31,341.43 × 6,855.22
  4. Step 4: Simplify right side
    20,894.09x = 214,852,397.76
  5. Step 5: Solve for x
    x = 214,852,397.76/20,894.09
  6. Step 6: Final answer
    x = 10,282.93

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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.