Home / 20,829.58-28,741.47-11,877.10

Finding the Fourth Proportional to 20,829.58, 28,741.47 and 11,877.10

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Solution

The fourth proportional to 20,829.58, 28,741.47 and 11,877.10 is: 16,388.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,829.58 : 28,741.47 = 11,877.10 : x
  2. Step 2: Convert to fraction form
    20,829.58/28,741.47 = 11,877.10/x
  3. Step 3: Cross multiply
    20,829.58x = 28,741.47 × 11,877.10
  4. Step 4: Simplify right side
    20,829.58x = 341,365,313.34
  5. Step 5: Solve for x
    x = 341,365,313.34/20,829.58
  6. Step 6: Final answer
    x = 16,388.49

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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.