Home / 20,973.60-31,434.48-12,627.36

Finding the Fourth Proportional to 20,973.60, 31,434.48 and 12,627.36

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Solution

The fourth proportional to 20,973.60, 31,434.48 and 12,627.36 is: 18,925.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,973.60 : 31,434.48 = 12,627.36 : x
  2. Step 2: Convert to fraction form
    20,973.60/31,434.48 = 12,627.36/x
  3. Step 3: Cross multiply
    20,973.60x = 31,434.48 × 12,627.36
  4. Step 4: Simplify right side
    20,973.60x = 396,934,495.37
  5. Step 5: Solve for x
    x = 396,934,495.37/20,973.60
  6. Step 6: Final answer
    x = 18,925.43

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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.