Home / 20,883.42-28,818.59-11,451.38

Finding the Fourth Proportional to 20,883.42, 28,818.59 and 11,451.38

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Solution

The fourth proportional to 20,883.42, 28,818.59 and 11,451.38 is: 15,802.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,883.42 : 28,818.59 = 11,451.38 : x
  2. Step 2: Convert to fraction form
    20,883.42/28,818.59 = 11,451.38/x
  3. Step 3: Cross multiply
    20,883.42x = 28,818.59 × 11,451.38
  4. Step 4: Simplify right side
    20,883.42x = 330,012,423.80
  5. Step 5: Solve for x
    x = 330,012,423.80/20,883.42
  6. Step 6: Final answer
    x = 15,802.60

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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.