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Finding the Fourth Proportional to 13,284.88, 19,929.48 and 4,518.88

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Solution

The fourth proportional to 13,284.88, 19,929.48 and 4,518.88 is: 6,779.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,284.88 : 19,929.48 = 4,518.88 : x
  2. Step 2: Convert to fraction form
    13,284.88/19,929.48 = 4,518.88/x
  3. Step 3: Cross multiply
    13,284.88x = 19,929.48 × 4,518.88
  4. Step 4: Simplify right side
    13,284.88x = 90,058,928.58
  5. Step 5: Solve for x
    x = 90,058,928.58/13,284.88
  6. Step 6: Final answer
    x = 6,779.05

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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.