Home / 19,888.17-27,431.15-12,617.82

Finding the Fourth Proportional to 19,888.17, 27,431.15 and 12,617.82

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Solution

The fourth proportional to 19,888.17, 27,431.15 and 12,617.82 is: 17,403.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,888.17 : 27,431.15 = 12,617.82 : x
  2. Step 2: Convert to fraction form
    19,888.17/27,431.15 = 12,617.82/x
  3. Step 3: Cross multiply
    19,888.17x = 27,431.15 × 12,617.82
  4. Step 4: Simplify right side
    19,888.17x = 346,121,112.85
  5. Step 5: Solve for x
    x = 346,121,112.85/19,888.17
  6. Step 6: Final answer
    x = 17,403.37

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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.