Home / 20,722.75-31,061.99-11,818.91

Finding the Fourth Proportional to 20,722.75, 31,061.99 and 11,818.91

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Solution

The fourth proportional to 20,722.75, 31,061.99 and 11,818.91 is: 17,715.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,722.75 : 31,061.99 = 11,818.91 : x
  2. Step 2: Convert to fraction form
    20,722.75/31,061.99 = 11,818.91/x
  3. Step 3: Cross multiply
    20,722.75x = 31,061.99 × 11,818.91
  4. Step 4: Simplify right side
    20,722.75x = 367,118,741.63
  5. Step 5: Solve for x
    x = 367,118,741.63/20,722.75
  6. Step 6: Final answer
    x = 17,715.74

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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.