Home / 29,139.90-43,742.70-19,298.40

Finding the Fourth Proportional to 29,139.90, 43,742.70 and 19,298.40

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Solution

The fourth proportional to 29,139.90, 43,742.70 and 19,298.40 is: 28,969.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,139.90 : 43,742.70 = 19,298.40 : x
  2. Step 2: Convert to fraction form
    29,139.90/43,742.70 = 19,298.40/x
  3. Step 3: Cross multiply
    29,139.90x = 43,742.70 × 19,298.40
  4. Step 4: Simplify right side
    29,139.90x = 844,164,121.68
  5. Step 5: Solve for x
    x = 844,164,121.68/29,139.90
  6. Step 6: Final answer
    x = 28,969.36

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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.