Home / 20,554.36-28,365.58-12,485.30

Finding the Fourth Proportional to 20,554.36, 28,365.58 and 12,485.30

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Solution

The fourth proportional to 20,554.36, 28,365.58 and 12,485.30 is: 17,230.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,554.36 : 28,365.58 = 12,485.30 : x
  2. Step 2: Convert to fraction form
    20,554.36/28,365.58 = 12,485.30/x
  3. Step 3: Cross multiply
    20,554.36x = 28,365.58 × 12,485.30
  4. Step 4: Simplify right side
    20,554.36x = 354,152,775.97
  5. Step 5: Solve for x
    x = 354,152,775.97/20,554.36
  6. Step 6: Final answer
    x = 17,230.06

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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.