Home / 20,934.09-28,881.90-12,973.41

Finding the Fourth Proportional to 20,934.09, 28,881.90 and 12,973.41

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Solution

The fourth proportional to 20,934.09, 28,881.90 and 12,973.41 is: 17,898.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,934.09 : 28,881.90 = 12,973.41 : x
  2. Step 2: Convert to fraction form
    20,934.09/28,881.90 = 12,973.41/x
  3. Step 3: Cross multiply
    20,934.09x = 28,881.90 × 12,973.41
  4. Step 4: Simplify right side
    20,934.09x = 374,696,730.28
  5. Step 5: Solve for x
    x = 374,696,730.28/20,934.09
  6. Step 6: Final answer
    x = 17,898.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.