Home / 12,803.20-17,668.40-7,214.24

Finding the Fourth Proportional to 12,803.20, 17,668.40 and 7,214.24

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Solution

The fourth proportional to 12,803.20, 17,668.40 and 7,214.24 is: 9,955.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,803.20 : 17,668.40 = 7,214.24 : x
  2. Step 2: Convert to fraction form
    12,803.20/17,668.40 = 7,214.24/x
  3. Step 3: Cross multiply
    12,803.20x = 17,668.40 × 7,214.24
  4. Step 4: Simplify right side
    12,803.20x = 127,464,078.02
  5. Step 5: Solve for x
    x = 127,464,078.02/12,803.20
  6. Step 6: Final answer
    x = 9,955.64

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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.