Home / 12,765.20-17,616.00-7,100.30

Finding the Fourth Proportional to 12,765.20, 17,616.00 and 7,100.30

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Solution

The fourth proportional to 12,765.20, 17,616.00 and 7,100.30 is: 9,798.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,765.20 : 17,616.00 = 7,100.30 : x
  2. Step 2: Convert to fraction form
    12,765.20/17,616.00 = 7,100.30/x
  3. Step 3: Cross multiply
    12,765.20x = 17,616.00 × 7,100.30
  4. Step 4: Simplify right side
    12,765.20x = 125,078,955.47
  5. Step 5: Solve for x
    x = 125,078,955.47/12,765.20
  6. Step 6: Final answer
    x = 9,798.44

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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.