Home / 21,014.32-28,996.48-13,467.44

Finding the Fourth Proportional to 21,014.32, 28,996.48 and 13,467.44

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Solution

The fourth proportional to 21,014.32, 28,996.48 and 13,467.44 is: 18,582.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,014.32 : 28,996.48 = 13,467.44 : x
  2. Step 2: Convert to fraction form
    21,014.32/28,996.48 = 13,467.44/x
  3. Step 3: Cross multiply
    21,014.32x = 28,996.48 × 13,467.44
  4. Step 4: Simplify right side
    21,014.32x = 390,508,354.61
  5. Step 5: Solve for x
    x = 390,508,354.61/21,014.32
  6. Step 6: Final answer
    x = 18,582.96

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1.5x scale

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.