Home / 20,676.23-28,533.80-12,723.11

Finding the Fourth Proportional to 20,676.23, 28,533.80 and 12,723.11

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Solution

The fourth proportional to 20,676.23, 28,533.80 and 12,723.11 is: 17,558.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,676.23 : 28,533.80 = 12,723.11 : x
  2. Step 2: Convert to fraction form
    20,676.23/28,533.80 = 12,723.11/x
  3. Step 3: Cross multiply
    20,676.23x = 28,533.80 × 12,723.11
  4. Step 4: Simplify right side
    20,676.23x = 363,038,612.50
  5. Step 5: Solve for x
    x = 363,038,612.50/20,676.23
  6. Step 6: Final answer
    x = 17,558.26

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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.