Home / 20,106.84-27,748.38-12,557.64

Finding the Fourth Proportional to 20,106.84, 27,748.38 and 12,557.64

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Solution

The fourth proportional to 20,106.84, 27,748.38 and 12,557.64 is: 17,330.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,106.84 : 27,748.38 = 12,557.64 : x
  2. Step 2: Convert to fraction form
    20,106.84/27,748.38 = 12,557.64/x
  3. Step 3: Cross multiply
    20,106.84x = 27,748.38 × 12,557.64
  4. Step 4: Simplify right side
    20,106.84x = 348,454,166.62
  5. Step 5: Solve for x
    x = 348,454,166.62/20,106.84
  6. Step 6: Final answer
    x = 17,330.13

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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.