Home / 12,883.51-17,780.67-7,219.18

Finding the Fourth Proportional to 12,883.51, 17,780.67 and 7,219.18

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Solution

The fourth proportional to 12,883.51, 17,780.67 and 7,219.18 is: 9,963.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,883.51 : 17,780.67 = 7,219.18 : x
  2. Step 2: Convert to fraction form
    12,883.51/17,780.67 = 7,219.18/x
  3. Step 3: Cross multiply
    12,883.51x = 17,780.67 × 7,219.18
  4. Step 4: Simplify right side
    12,883.51x = 128,361,768.35
  5. Step 5: Solve for x
    x = 128,361,768.35/12,883.51
  6. Step 6: Final answer
    x = 9,963.26

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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.