Home / 20,409.98-28,166.54-12,346.22

Finding the Fourth Proportional to 20,409.98, 28,166.54 and 12,346.22

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Solution

The fourth proportional to 20,409.98, 28,166.54 and 12,346.22 is: 17,038.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,409.98 : 28,166.54 = 12,346.22 : x
  2. Step 2: Convert to fraction form
    20,409.98/28,166.54 = 12,346.22/x
  3. Step 3: Cross multiply
    20,409.98x = 28,166.54 × 12,346.22
  4. Step 4: Simplify right side
    20,409.98x = 347,750,308.16
  5. Step 5: Solve for x
    x = 347,750,308.16/20,409.98
  6. Step 6: Final answer
    x = 17,038.25

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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.