Home / 20,984.96-28,959.32-12,032.64

Finding the Fourth Proportional to 20,984.96, 28,959.32 and 12,032.64

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Solution

The fourth proportional to 20,984.96, 28,959.32 and 12,032.64 is: 16,605.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,984.96 : 28,959.32 = 12,032.64 : x
  2. Step 2: Convert to fraction form
    20,984.96/28,959.32 = 12,032.64/x
  3. Step 3: Cross multiply
    20,984.96x = 28,959.32 × 12,032.64
  4. Step 4: Simplify right side
    20,984.96x = 348,457,072.20
  5. Step 5: Solve for x
    x = 348,457,072.20/20,984.96
  6. Step 6: Final answer
    x = 16,605.09

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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.