Home / 13,428.44-18,529.98-12,437.72

Finding the Fourth Proportional to 13,428.44, 18,529.98 and 12,437.72

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Solution

The fourth proportional to 13,428.44, 18,529.98 and 12,437.72 is: 17,162.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,428.44 : 18,529.98 = 12,437.72 : x
  2. Step 2: Convert to fraction form
    13,428.44/18,529.98 = 12,437.72/x
  3. Step 3: Cross multiply
    13,428.44x = 18,529.98 × 12,437.72
  4. Step 4: Simplify right side
    13,428.44x = 230,470,702.85
  5. Step 5: Solve for x
    x = 230,470,702.85/13,428.44
  6. Step 6: Final answer
    x = 17,162.88

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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.