Home / 19,670.28-27,141.81-11,712.30

Finding the Fourth Proportional to 19,670.28, 27,141.81 and 11,712.30

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Solution

The fourth proportional to 19,670.28, 27,141.81 and 11,712.30 is: 16,161.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,670.28 : 27,141.81 = 11,712.30 : x
  2. Step 2: Convert to fraction form
    19,670.28/27,141.81 = 11,712.30/x
  3. Step 3: Cross multiply
    19,670.28x = 27,141.81 × 11,712.30
  4. Step 4: Simplify right side
    19,670.28x = 317,893,021.26
  5. Step 5: Solve for x
    x = 317,893,021.26/19,670.28
  6. Step 6: Final answer
    x = 16,161.08

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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.