Home / 12,140.82-16,754.51-7,107.99

Finding the Fourth Proportional to 12,140.82, 16,754.51 and 7,107.99

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Solution

The fourth proportional to 12,140.82, 16,754.51 and 7,107.99 is: 9,809.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,140.82 : 16,754.51 = 7,107.99 : x
  2. Step 2: Convert to fraction form
    12,140.82/16,754.51 = 7,107.99/x
  3. Step 3: Cross multiply
    12,140.82x = 16,754.51 × 7,107.99
  4. Step 4: Simplify right side
    12,140.82x = 119,090,844.48
  5. Step 5: Solve for x
    x = 119,090,844.48/12,140.82
  6. Step 6: Final answer
    x = 9,809.13

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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.