Home / 19,705.79-27,191.27-11,208.35

Finding the Fourth Proportional to 19,705.79, 27,191.27 and 11,208.35

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Solution

The fourth proportional to 19,705.79, 27,191.27 and 11,208.35 is: 15,465.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,705.79 : 27,191.27 = 11,208.35 : x
  2. Step 2: Convert to fraction form
    19,705.79/27,191.27 = 11,208.35/x
  3. Step 3: Cross multiply
    19,705.79x = 27,191.27 × 11,208.35
  4. Step 4: Simplify right side
    19,705.79x = 304,769,079.11
  5. Step 5: Solve for x
    x = 304,769,079.11/19,705.79
  6. Step 6: Final answer
    x = 15,465.97

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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.