Home / 20,983.16-28,960.64-12,030.73

Finding the Fourth Proportional to 20,983.16, 28,960.64 and 12,030.73

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Solution

The fourth proportional to 20,983.16, 28,960.64 and 12,030.73 is: 16,604.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,983.16 : 28,960.64 = 12,030.73 : x
  2. Step 2: Convert to fraction form
    20,983.16/28,960.64 = 12,030.73/x
  3. Step 3: Cross multiply
    20,983.16x = 28,960.64 × 12,030.73
  4. Step 4: Simplify right side
    20,983.16x = 348,417,640.47
  5. Step 5: Solve for x
    x = 348,417,640.47/20,983.16
  6. Step 6: Final answer
    x = 16,604.63

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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.