Home / 12,765.20-19,099.68-11,470.28

Finding the Fourth Proportional to 12,765.20, 19,099.68 and 11,470.28

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Solution

The fourth proportional to 12,765.20, 19,099.68 and 11,470.28 is: 17,162.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,765.20 : 19,099.68 = 11,470.28 : x
  2. Step 2: Convert to fraction form
    12,765.20/19,099.68 = 11,470.28/x
  3. Step 3: Cross multiply
    12,765.20x = 19,099.68 × 11,470.28
  4. Step 4: Simplify right side
    12,765.20x = 219,078,677.51
  5. Step 5: Solve for x
    x = 219,078,677.51/12,765.20
  6. Step 6: Final answer
    x = 17,162.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.