Home / 20,986.05-28,957.75-12,033.93

Finding the Fourth Proportional to 20,986.05, 28,957.75 and 12,033.93

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Solution

The fourth proportional to 20,986.05, 28,957.75 and 12,033.93 is: 16,605.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,986.05 : 28,957.75 = 12,033.93 : x
  2. Step 2: Convert to fraction form
    20,986.05/28,957.75 = 12,033.93/x
  3. Step 3: Cross multiply
    20,986.05x = 28,957.75 × 12,033.93
  4. Step 4: Simplify right side
    20,986.05x = 348,475,536.46
  5. Step 5: Solve for x
    x = 348,475,536.46/20,986.05
  6. Step 6: Final answer
    x = 16,605.10

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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.