Home / 19,619.59-27,079.34-12,905.88

Finding the Fourth Proportional to 19,619.59, 27,079.34 and 12,905.88

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Solution

The fourth proportional to 19,619.59, 27,079.34 and 12,905.88 is: 17,812.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,619.59 : 27,079.34 = 12,905.88 : x
  2. Step 2: Convert to fraction form
    19,619.59/27,079.34 = 12,905.88/x
  3. Step 3: Cross multiply
    19,619.59x = 27,079.34 × 12,905.88
  4. Step 4: Simplify right side
    19,619.59x = 349,482,647.99
  5. Step 5: Solve for x
    x = 349,482,647.99/19,619.59
  6. Step 6: Final answer
    x = 17,812.94

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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.