Home / 12,881.36-17,777.02-7,216.58

Finding the Fourth Proportional to 12,881.36, 17,777.02 and 7,216.58

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Solution

The fourth proportional to 12,881.36, 17,777.02 and 7,216.58 is: 9,959.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,881.36 : 17,777.02 = 7,216.58 : x
  2. Step 2: Convert to fraction form
    12,881.36/17,777.02 = 7,216.58/x
  3. Step 3: Cross multiply
    12,881.36x = 17,777.02 × 7,216.58
  4. Step 4: Simplify right side
    12,881.36x = 128,289,286.99
  5. Step 5: Solve for x
    x = 128,289,286.99/12,881.36
  6. Step 6: Final answer
    x = 9,959.30

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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.