Home / 20,084.84-27,720.08-11,585.40

Finding the Fourth Proportional to 20,084.84, 27,720.08 and 11,585.40

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Solution

The fourth proportional to 20,084.84, 27,720.08 and 11,585.40 is: 15,989.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,084.84 : 27,720.08 = 11,585.40 : x
  2. Step 2: Convert to fraction form
    20,084.84/27,720.08 = 11,585.40/x
  3. Step 3: Cross multiply
    20,084.84x = 27,720.08 × 11,585.40
  4. Step 4: Simplify right side
    20,084.84x = 321,148,214.83
  5. Step 5: Solve for x
    x = 321,148,214.83/20,084.84
  6. Step 6: Final answer
    x = 15,989.58

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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.