Home / 20,421.47-30,573.79-13,835.97

Finding the Fourth Proportional to 20,421.47, 30,573.79 and 13,835.97

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Solution

The fourth proportional to 20,421.47, 30,573.79 and 13,835.97 is: 20,714.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,421.47 : 30,573.79 = 13,835.97 : x
  2. Step 2: Convert to fraction form
    20,421.47/30,573.79 = 13,835.97/x
  3. Step 3: Cross multiply
    20,421.47x = 30,573.79 × 13,835.97
  4. Step 4: Simplify right side
    20,421.47x = 423,018,006.64
  5. Step 5: Solve for x
    x = 423,018,006.64/20,421.47
  6. Step 6: Final answer
    x = 20,714.37

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1.5x scale

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.