Home / 14,811.48-20,447.88-11,780.64

Finding the Fourth Proportional to 14,811.48, 20,447.88 and 11,780.64

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Solution

The fourth proportional to 14,811.48, 20,447.88 and 11,780.64 is: 16,263.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,811.48 : 20,447.88 = 11,780.64 : x
  2. Step 2: Convert to fraction form
    14,811.48/20,447.88 = 11,780.64/x
  3. Step 3: Cross multiply
    14,811.48x = 20,447.88 × 11,780.64
  4. Step 4: Simplify right side
    14,811.48x = 240,889,113.04
  5. Step 5: Solve for x
    x = 240,889,113.04/14,811.48
  6. Step 6: Final answer
    x = 16,263.68

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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.