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Finding the Fourth Proportional to 19,683.51, 27,162.71 and 10,731.19

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Solution

The fourth proportional to 19,683.51, 27,162.71 and 10,731.19 is: 14,808.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,683.51 : 27,162.71 = 10,731.19 : x
  2. Step 2: Convert to fraction form
    19,683.51/27,162.71 = 10,731.19/x
  3. Step 3: Cross multiply
    19,683.51x = 27,162.71 × 10,731.19
  4. Step 4: Simplify right side
    19,683.51x = 291,488,080.36
  5. Step 5: Solve for x
    x = 291,488,080.36/19,683.51
  6. Step 6: Final answer
    x = 14,808.75

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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.