Home / 13,931.33-20,898.79-4,070.43

Finding the Fourth Proportional to 13,931.33, 20,898.79 and 4,070.43

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Solution

The fourth proportional to 13,931.33, 20,898.79 and 4,070.43 is: 6,106.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,931.33 : 20,898.79 = 4,070.43 : x
  2. Step 2: Convert to fraction form
    13,931.33/20,898.79 = 4,070.43/x
  3. Step 3: Cross multiply
    13,931.33x = 20,898.79 × 4,070.43
  4. Step 4: Simplify right side
    13,931.33x = 85,067,051.60
  5. Step 5: Solve for x
    x = 85,067,051.60/13,931.33
  6. Step 6: Final answer
    x = 6,106.17

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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.