Home / 19,810.30-29,695.46-12,419.95

Finding the Fourth Proportional to 19,810.30, 29,695.46 and 12,419.95

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Solution

The fourth proportional to 19,810.30, 29,695.46 and 12,419.95 is: 18,617.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,810.30 : 29,695.46 = 12,419.95 : x
  2. Step 2: Convert to fraction form
    19,810.30/29,695.46 = 12,419.95/x
  3. Step 3: Cross multiply
    19,810.30x = 29,695.46 × 12,419.95
  4. Step 4: Simplify right side
    19,810.30x = 368,816,128.43
  5. Step 5: Solve for x
    x = 368,816,128.43/19,810.30
  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.