Home / 19,888.67-27,431.84-12,618.32

Finding the Fourth Proportional to 19,888.67, 27,431.84 and 12,618.32

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Solution

The fourth proportional to 19,888.67, 27,431.84 and 12,618.32 is: 17,404.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,888.67 : 27,431.84 = 12,618.32 : x
  2. Step 2: Convert to fraction form
    19,888.67/27,431.84 = 12,618.32/x
  3. Step 3: Cross multiply
    19,888.67x = 27,431.84 × 12,618.32
  4. Step 4: Simplify right side
    19,888.67x = 346,143,535.06
  5. Step 5: Solve for x
    x = 346,143,535.06/19,888.67
  6. Step 6: Final answer
    x = 17,404.06

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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.