Home / 19,191.12-26,473.20-12,279.30

Finding the Fourth Proportional to 19,191.12, 26,473.20 and 12,279.30

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Solution

The fourth proportional to 19,191.12, 26,473.20 and 12,279.30 is: 16,938.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,191.12 : 26,473.20 = 12,279.30 : x
  2. Step 2: Convert to fraction form
    19,191.12/26,473.20 = 12,279.30/x
  3. Step 3: Cross multiply
    19,191.12x = 26,473.20 × 12,279.30
  4. Step 4: Simplify right side
    19,191.12x = 325,072,364.76
  5. Step 5: Solve for x
    x = 325,072,364.76/19,191.12
  6. Step 6: Final answer
    x = 16,938.69

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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.