Home / 19,985.40-27,579.71-11,032.90

Finding the Fourth Proportional to 19,985.40, 27,579.71 and 11,032.90

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Solution

The fourth proportional to 19,985.40, 27,579.71 and 11,032.90 is: 15,225.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,985.40 : 27,579.71 = 11,032.90 : x
  2. Step 2: Convert to fraction form
    19,985.40/27,579.71 = 11,032.90/x
  3. Step 3: Cross multiply
    19,985.40x = 27,579.71 × 11,032.90
  4. Step 4: Simplify right side
    19,985.40x = 304,284,141.09
  5. Step 5: Solve for x
    x = 304,284,141.09/19,985.40
  6. Step 6: Final answer
    x = 15,225.32

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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.