Home / 20,095.76-27,731.40-11,143.36

Finding the Fourth Proportional to 20,095.76, 27,731.40 and 11,143.36

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Solution

The fourth proportional to 20,095.76, 27,731.40 and 11,143.36 is: 15,377.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,095.76 : 27,731.40 = 11,143.36 : x
  2. Step 2: Convert to fraction form
    20,095.76/27,731.40 = 11,143.36/x
  3. Step 3: Cross multiply
    20,095.76x = 27,731.40 × 11,143.36
  4. Step 4: Simplify right side
    20,095.76x = 309,020,973.50
  5. Step 5: Solve for x
    x = 309,020,973.50/20,095.76
  6. Step 6: Final answer
    x = 15,377.42

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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.