Home / 20,804.25-28,703.58-12,307.35

Finding the Fourth Proportional to 20,804.25, 28,703.58 and 12,307.35

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Solution

The fourth proportional to 20,804.25, 28,703.58 and 12,307.35 is: 16,980.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,804.25 : 28,703.58 = 12,307.35 : x
  2. Step 2: Convert to fraction form
    20,804.25/28,703.58 = 12,307.35/x
  3. Step 3: Cross multiply
    20,804.25x = 28,703.58 × 12,307.35
  4. Step 4: Simplify right side
    20,804.25x = 353,265,005.31
  5. Step 5: Solve for x
    x = 353,265,005.31/20,804.25
  6. Step 6: Final answer
    x = 16,980.42

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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.