Home / 20,095.47-27,727.76-12,138.14

Finding the Fourth Proportional to 20,095.47, 27,727.76 and 12,138.14

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Solution

The fourth proportional to 20,095.47, 27,727.76 and 12,138.14 is: 16,748.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,095.47 : 27,727.76 = 12,138.14 : x
  2. Step 2: Convert to fraction form
    20,095.47/27,727.76 = 12,138.14/x
  3. Step 3: Cross multiply
    20,095.47x = 27,727.76 × 12,138.14
  4. Step 4: Simplify right side
    20,095.47x = 336,563,233.44
  5. Step 5: Solve for x
    x = 336,563,233.44/20,095.47
  6. Step 6: Final answer
    x = 16,748.21

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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.