Home / 20,512.22-28,313.89-12,017.07

Finding the Fourth Proportional to 20,512.22, 28,313.89 and 12,017.07

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Solution

The fourth proportional to 20,512.22, 28,313.89 and 12,017.07 is: 16,587.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,512.22 : 28,313.89 = 12,017.07 : x
  2. Step 2: Convert to fraction form
    20,512.22/28,313.89 = 12,017.07/x
  3. Step 3: Cross multiply
    20,512.22x = 28,313.89 × 12,017.07
  4. Step 4: Simplify right side
    20,512.22x = 340,249,968.06
  5. Step 5: Solve for x
    x = 340,249,968.06/20,512.22
  6. Step 6: Final answer
    x = 16,587.68

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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.