Home / 20,722.81-31,093.40-10,859.74

Finding the Fourth Proportional to 20,722.81, 31,093.40 and 10,859.74

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Solution

The fourth proportional to 20,722.81, 31,093.40 and 10,859.74 is: 16,294.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,722.81 : 31,093.40 = 10,859.74 : x
  2. Step 2: Convert to fraction form
    20,722.81/31,093.40 = 10,859.74/x
  3. Step 3: Cross multiply
    20,722.81x = 31,093.40 × 10,859.74
  4. Step 4: Simplify right side
    20,722.81x = 337,666,212.57
  5. Step 5: Solve for x
    x = 337,666,212.57/20,722.81
  6. Step 6: Final answer
    x = 16,294.43

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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.