Home / 13,340.70-18,417.96-11,864.34

Finding the Fourth Proportional to 13,340.70, 18,417.96 and 11,864.34

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Solution

The fourth proportional to 13,340.70, 18,417.96 and 11,864.34 is: 16,379.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,340.70 : 18,417.96 = 11,864.34 : x
  2. Step 2: Convert to fraction form
    13,340.70/18,417.96 = 11,864.34/x
  3. Step 3: Cross multiply
    13,340.70x = 18,417.96 × 11,864.34
  4. Step 4: Simplify right side
    13,340.70x = 218,516,939.55
  5. Step 5: Solve for x
    x = 218,516,939.55/13,340.70
  6. Step 6: Final answer
    x = 16,379.72

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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.