Home / 13,670.65-18,858.82-8,005.51

Finding the Fourth Proportional to 13,670.65, 18,858.82 and 8,005.51

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Solution

The fourth proportional to 13,670.65, 18,858.82 and 8,005.51 is: 11,043.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,670.65 : 18,858.82 = 8,005.51 : x
  2. Step 2: Convert to fraction form
    13,670.65/18,858.82 = 8,005.51/x
  3. Step 3: Cross multiply
    13,670.65x = 18,858.82 × 8,005.51
  4. Step 4: Simplify right side
    13,670.65x = 150,974,472.10
  5. Step 5: Solve for x
    x = 150,974,472.10/13,670.65
  6. Step 6: Final answer
    x = 11,043.69

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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.