Home / 12,485.57-17,206.40-8,942.63

Finding the Fourth Proportional to 12,485.57, 17,206.40 and 8,942.63

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Solution

The fourth proportional to 12,485.57, 17,206.40 and 8,942.63 is: 12,323.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,485.57 : 17,206.40 = 8,942.63 : x
  2. Step 2: Convert to fraction form
    12,485.57/17,206.40 = 8,942.63/x
  3. Step 3: Cross multiply
    12,485.57x = 17,206.40 × 8,942.63
  4. Step 4: Simplify right side
    12,485.57x = 153,870,534.20
  5. Step 5: Solve for x
    x = 153,870,534.20/12,485.57
  6. Step 6: Final answer
    x = 12,323.87

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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.