Home / 13,561.64-18,705.40-12,446.18

Finding the Fourth Proportional to 13,561.64, 18,705.40 and 12,446.18

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Solution

The fourth proportional to 13,561.64, 18,705.40 and 12,446.18 is: 17,166.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,561.64 : 18,705.40 = 12,446.18 : x
  2. Step 2: Convert to fraction form
    13,561.64/18,705.40 = 12,446.18/x
  3. Step 3: Cross multiply
    13,561.64x = 18,705.40 × 12,446.18
  4. Step 4: Simplify right side
    13,561.64x = 232,810,775.37
  5. Step 5: Solve for x
    x = 232,810,775.37/13,561.64
  6. Step 6: Final answer
    x = 17,166.86

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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.