Home / 20,806.53-28,711.45-11,852.28

Finding the Fourth Proportional to 20,806.53, 28,711.45 and 11,852.28

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Solution

The fourth proportional to 20,806.53, 28,711.45 and 11,852.28 is: 16,355.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,806.53 : 28,711.45 = 11,852.28 : x
  2. Step 2: Convert to fraction form
    20,806.53/28,711.45 = 11,852.28/x
  3. Step 3: Cross multiply
    20,806.53x = 28,711.45 × 11,852.28
  4. Step 4: Simplify right side
    20,806.53x = 340,296,159.42
  5. Step 5: Solve for x
    x = 340,296,159.42/20,806.53
  6. Step 6: Final answer
    x = 16,355.26

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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.