Home / 13,698.82-18,899.94-10,818.40

Finding the Fourth Proportional to 13,698.82, 18,899.94 and 10,818.40

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Solution

The fourth proportional to 13,698.82, 18,899.94 and 10,818.40 is: 14,925.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,698.82 : 18,899.94 = 10,818.40 : x
  2. Step 2: Convert to fraction form
    13,698.82/18,899.94 = 10,818.40/x
  3. Step 3: Cross multiply
    13,698.82x = 18,899.94 × 10,818.40
  4. Step 4: Simplify right side
    13,698.82x = 204,467,110.90
  5. Step 5: Solve for x
    x = 204,467,110.90/13,698.82
  6. Step 6: Final answer
    x = 14,925.89

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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.