Home / 19,810.31-29,695.45-12,419.96

Finding the Fourth Proportional to 19,810.31, 29,695.45 and 12,419.96

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Solution

The fourth proportional to 19,810.31, 29,695.45 and 12,419.96 is: 18,617.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,810.31 : 29,695.45 = 12,419.96 : x
  2. Step 2: Convert to fraction form
    19,810.31/29,695.45 = 12,419.96/x
  3. Step 3: Cross multiply
    19,810.31x = 29,695.45 × 12,419.96
  4. Step 4: Simplify right side
    19,810.31x = 368,816,301.18
  5. Step 5: Solve for x
    x = 368,816,301.18/19,810.31
  6. Step 6: Final answer
    x = 18,617.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.