Home / 20,673.10-28,528.05-11,722.51

Finding the Fourth Proportional to 20,673.10, 28,528.05 and 11,722.51

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Solution

The fourth proportional to 20,673.10, 28,528.05 and 11,722.51 is: 16,176.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,673.10 : 28,528.05 = 11,722.51 : x
  2. Step 2: Convert to fraction form
    20,673.10/28,528.05 = 11,722.51/x
  3. Step 3: Cross multiply
    20,673.10x = 28,528.05 × 11,722.51
  4. Step 4: Simplify right side
    20,673.10x = 334,420,351.41
  5. Step 5: Solve for x
    x = 334,420,351.41/20,673.10
  6. Step 6: Final answer
    x = 16,176.59

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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.