Home / 12,781.09-17,633.34-7,400.59

Finding the Fourth Proportional to 12,781.09, 17,633.34 and 7,400.59

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Solution

The fourth proportional to 12,781.09, 17,633.34 and 7,400.59 is: 10,210.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,781.09 : 17,633.34 = 7,400.59 : x
  2. Step 2: Convert to fraction form
    12,781.09/17,633.34 = 7,400.59/x
  3. Step 3: Cross multiply
    12,781.09x = 17,633.34 × 7,400.59
  4. Step 4: Simplify right side
    12,781.09x = 130,497,199.06
  5. Step 5: Solve for x
    x = 130,497,199.06/12,781.09
  6. Step 6: Final answer
    x = 10,210.17

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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.