Home / 13,858.80-19,103.28-12,714.72

Finding the Fourth Proportional to 13,858.80, 19,103.28 and 12,714.72

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Solution

The fourth proportional to 13,858.80, 19,103.28 and 12,714.72 is: 17,526.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,858.80 : 19,103.28 = 12,714.72 : x
  2. Step 2: Convert to fraction form
    13,858.80/19,103.28 = 12,714.72/x
  3. Step 3: Cross multiply
    13,858.80x = 19,103.28 × 12,714.72
  4. Step 4: Simplify right side
    13,858.80x = 242,892,856.28
  5. Step 5: Solve for x
    x = 242,892,856.28/13,858.80
  6. Step 6: Final answer
    x = 17,526.25

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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.