Home / 20,492.39-28,268.80-12,936.00

Finding the Fourth Proportional to 20,492.39, 28,268.80 and 12,936.00

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Solution

The fourth proportional to 20,492.39, 28,268.80 and 12,936.00 is: 17,844.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,492.39 : 28,268.80 = 12,936.00 : x
  2. Step 2: Convert to fraction form
    20,492.39/28,268.80 = 12,936.00/x
  3. Step 3: Cross multiply
    20,492.39x = 28,268.80 × 12,936.00
  4. Step 4: Simplify right side
    20,492.39x = 365,685,270.47
  5. Step 5: Solve for x
    x = 365,685,270.47/20,492.39
  6. Step 6: Final answer
    x = 17,844.93

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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.