Home / 19,659.32-27,128.76-11,159.16

Finding the Fourth Proportional to 19,659.32, 27,128.76 and 11,159.16

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Solution

The fourth proportional to 19,659.32, 27,128.76 and 11,159.16 is: 15,399.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,659.32 : 27,128.76 = 11,159.16 : x
  2. Step 2: Convert to fraction form
    19,659.32/27,128.76 = 11,159.16/x
  3. Step 3: Cross multiply
    19,659.32x = 27,128.76 × 11,159.16
  4. Step 4: Simplify right side
    19,659.32x = 302,734,173.44
  5. Step 5: Solve for x
    x = 302,734,173.44/19,659.32
  6. Step 6: Final answer
    x = 15,399.02

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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.