Home / 20,964.67-28,935.38-12,018.18

Finding the Fourth Proportional to 20,964.67, 28,935.38 and 12,018.18

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Solution

The fourth proportional to 20,964.67, 28,935.38 and 12,018.18 is: 16,587.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,964.67 : 28,935.38 = 12,018.18 : x
  2. Step 2: Convert to fraction form
    20,964.67/28,935.38 = 12,018.18/x
  3. Step 3: Cross multiply
    20,964.67x = 28,935.38 × 12,018.18
  4. Step 4: Simplify right side
    20,964.67x = 347,750,605.21
  5. Step 5: Solve for x
    x = 347,750,605.21/20,964.67
  6. Step 6: Final answer
    x = 16,587.46

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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.