Home / 19,720.08-27,213.72-11,336.08

Finding the Fourth Proportional to 19,720.08, 27,213.72 and 11,336.08

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Solution

The fourth proportional to 19,720.08, 27,213.72 and 11,336.08 is: 15,643.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,720.08 : 27,213.72 = 11,336.08 : x
  2. Step 2: Convert to fraction form
    19,720.08/27,213.72 = 11,336.08/x
  3. Step 3: Cross multiply
    19,720.08x = 27,213.72 × 11,336.08
  4. Step 4: Simplify right side
    19,720.08x = 308,496,907.02
  5. Step 5: Solve for x
    x = 308,496,907.02/19,720.08
  6. Step 6: Final answer
    x = 15,643.80

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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.