Home / 20,080.50-27,724.08-12,913.62

Finding the Fourth Proportional to 20,080.50, 27,724.08 and 12,913.62

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Solution

The fourth proportional to 20,080.50, 27,724.08 and 12,913.62 is: 17,829.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,080.50 : 27,724.08 = 12,913.62 : x
  2. Step 2: Convert to fraction form
    20,080.50/27,724.08 = 12,913.62/x
  3. Step 3: Cross multiply
    20,080.50x = 27,724.08 × 12,913.62
  4. Step 4: Simplify right side
    20,080.50x = 358,018,233.97
  5. Step 5: Solve for x
    x = 358,018,233.97/20,080.50
  6. Step 6: Final answer
    x = 17,829.15

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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.