Home / 19,659.16-27,111.12-15,175.84

Finding the Fourth Proportional to 19,659.16, 27,111.12 and 15,175.84

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Solution

The fourth proportional to 19,659.16, 27,111.12 and 15,175.84 is: 20,928.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,659.16 : 27,111.12 = 15,175.84 : x
  2. Step 2: Convert to fraction form
    19,659.16/27,111.12 = 15,175.84/x
  3. Step 3: Cross multiply
    19,659.16x = 27,111.12 × 15,175.84
  4. Step 4: Simplify right side
    19,659.16x = 411,434,019.34
  5. Step 5: Solve for x
    x = 411,434,019.34/19,659.16
  6. Step 6: Final answer
    x = 20,928.36

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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.