Home / 20,528.23-30,732.37-18,558.41

Finding the Fourth Proportional to 20,528.23, 30,732.37 and 18,558.41

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Solution

The fourth proportional to 20,528.23, 30,732.37 and 18,558.41 is: 27,783.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,528.23 : 30,732.37 = 18,558.41 : x
  2. Step 2: Convert to fraction form
    20,528.23/30,732.37 = 18,558.41/x
  3. Step 3: Cross multiply
    20,528.23x = 30,732.37 × 18,558.41
  4. Step 4: Simplify right side
    20,528.23x = 570,343,876.34
  5. Step 5: Solve for x
    x = 570,343,876.34/20,528.23
  6. Step 6: Final answer
    x = 27,783.39

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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.