Home / 14,520.08-21,780.29-13,811.87

Finding the Fourth Proportional to 14,520.08, 21,780.29 and 13,811.87

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Solution

The fourth proportional to 14,520.08, 21,780.29 and 13,811.87 is: 20,717.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,520.08 : 21,780.29 = 13,811.87 : x
  2. Step 2: Convert to fraction form
    14,520.08/21,780.29 = 13,811.87/x
  3. Step 3: Cross multiply
    14,520.08x = 21,780.29 × 13,811.87
  4. Step 4: Simplify right side
    14,520.08x = 300,826,623.02
  5. Step 5: Solve for x
    x = 300,826,623.02/14,520.08
  6. Step 6: Final answer
    x = 20,717.97

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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.