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Finding the Fourth Proportional to 18,848.48, 28,282.44 and 7,763.36

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Solution

The fourth proportional to 18,848.48, 28,282.44 and 7,763.36 is: 11,649.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,848.48 : 28,282.44 = 7,763.36 : x
  2. Step 2: Convert to fraction form
    18,848.48/28,282.44 = 7,763.36/x
  3. Step 3: Cross multiply
    18,848.48x = 28,282.44 × 7,763.36
  4. Step 4: Simplify right side
    18,848.48x = 219,566,763.40
  5. Step 5: Solve for x
    x = 219,566,763.40/18,848.48
  6. Step 6: Final answer
    x = 11,649.04

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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.