Home / 14,720.99-20,316.55-12,887.24

Finding the Fourth Proportional to 14,720.99, 20,316.55 and 12,887.24

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Solution

The fourth proportional to 14,720.99, 20,316.55 and 12,887.24 is: 17,785.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,720.99 : 20,316.55 = 12,887.24 : x
  2. Step 2: Convert to fraction form
    14,720.99/20,316.55 = 12,887.24/x
  3. Step 3: Cross multiply
    14,720.99x = 20,316.55 × 12,887.24
  4. Step 4: Simplify right side
    14,720.99x = 261,824,195.65
  5. Step 5: Solve for x
    x = 261,824,195.65/14,720.99
  6. Step 6: Final answer
    x = 17,785.78

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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.