Home / 18,720.21-25,814.13-14,471.96

Finding the Fourth Proportional to 18,720.21, 25,814.13 and 14,471.96

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Solution

The fourth proportional to 18,720.21, 25,814.13 and 14,471.96 is: 19,956.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,720.21 : 25,814.13 = 14,471.96 : x
  2. Step 2: Convert to fraction form
    18,720.21/25,814.13 = 14,471.96/x
  3. Step 3: Cross multiply
    18,720.21x = 25,814.13 × 14,471.96
  4. Step 4: Simplify right side
    18,720.21x = 373,580,927.72
  5. Step 5: Solve for x
    x = 373,580,927.72/18,720.21
  6. Step 6: Final answer
    x = 19,956.02

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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.