Home / 19,881.51-27,437.31-11,382.99

Finding the Fourth Proportional to 19,881.51, 27,437.31 and 11,382.99

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Solution

The fourth proportional to 19,881.51, 27,437.31 and 11,382.99 is: 15,709.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,881.51 : 27,437.31 = 11,382.99 : x
  2. Step 2: Convert to fraction form
    19,881.51/27,437.31 = 11,382.99/x
  3. Step 3: Cross multiply
    19,881.51x = 27,437.31 × 11,382.99
  4. Step 4: Simplify right side
    19,881.51x = 312,318,625.36
  5. Step 5: Solve for x
    x = 312,318,625.36/19,881.51
  6. Step 6: Final answer
    x = 15,709.00

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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.