Home / 12,485.99-17,229.21-7,182.51

Finding the Fourth Proportional to 12,485.99, 17,229.21 and 7,182.51

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Solution

The fourth proportional to 12,485.99, 17,229.21 and 7,182.51 is: 9,911.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,485.99 : 17,229.21 = 7,182.51 : x
  2. Step 2: Convert to fraction form
    12,485.99/17,229.21 = 7,182.51/x
  3. Step 3: Cross multiply
    12,485.99x = 17,229.21 × 7,182.51
  4. Step 4: Simplify right side
    12,485.99x = 123,748,973.12
  5. Step 5: Solve for x
    x = 123,748,973.12/12,485.99
  6. Step 6: Final answer
    x = 9,911.03

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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.