Home / 12,070.80-18,127.05-7,171.23

Finding the Fourth Proportional to 12,070.80, 18,127.05 and 7,171.23

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Solution

The fourth proportional to 12,070.80, 18,127.05 and 7,171.23 is: 10,769.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,070.80 : 18,127.05 = 7,171.23 : x
  2. Step 2: Convert to fraction form
    12,070.80/18,127.05 = 7,171.23/x
  3. Step 3: Cross multiply
    12,070.80x = 18,127.05 × 7,171.23
  4. Step 4: Simplify right side
    12,070.80x = 129,993,244.77
  5. Step 5: Solve for x
    x = 129,993,244.77/12,070.80
  6. Step 6: Final answer
    x = 10,769.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.