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Finding the Fourth Proportional to 13,805.64, 19,041.48 and 8,765.48

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Solution

The fourth proportional to 13,805.64, 19,041.48 and 8,765.48 is: 12,089.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,805.64 : 19,041.48 = 8,765.48 : x
  2. Step 2: Convert to fraction form
    13,805.64/19,041.48 = 8,765.48/x
  3. Step 3: Cross multiply
    13,805.64x = 19,041.48 × 8,765.48
  4. Step 4: Simplify right side
    13,805.64x = 166,907,712.11
  5. Step 5: Solve for x
    x = 166,907,712.11/13,805.64
  6. Step 6: Final answer
    x = 12,089.82

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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.