Home / 20,303.35-28,022.08-11,810.39

Finding the Fourth Proportional to 20,303.35, 28,022.08 and 11,810.39

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Solution

The fourth proportional to 20,303.35, 28,022.08 and 11,810.39 is: 16,300.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,303.35 : 28,022.08 = 11,810.39 : x
  2. Step 2: Convert to fraction form
    20,303.35/28,022.08 = 11,810.39/x
  3. Step 3: Cross multiply
    20,303.35x = 28,022.08 × 11,810.39
  4. Step 4: Simplify right side
    20,303.35x = 330,951,782.36
  5. Step 5: Solve for x
    x = 330,951,782.36/20,303.35
  6. Step 6: Final answer
    x = 16,300.36

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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.