Home / 19,964.20-29,931.90-13,042.60

Finding the Fourth Proportional to 19,964.20, 29,931.90 and 13,042.60

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Solution

The fourth proportional to 19,964.20, 29,931.90 and 13,042.60 is: 19,554.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,964.20 : 29,931.90 = 13,042.60 : x
  2. Step 2: Convert to fraction form
    19,964.20/29,931.90 = 13,042.60/x
  3. Step 3: Cross multiply
    19,964.20x = 29,931.90 × 13,042.60
  4. Step 4: Simplify right side
    19,964.20x = 390,389,798.94
  5. Step 5: Solve for x
    x = 390,389,798.94/19,964.20
  6. Step 6: Final answer
    x = 19,554.49

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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.