Home / 20,665.91-28,518.36-11,714.24

Finding the Fourth Proportional to 20,665.91, 28,518.36 and 11,714.24

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Solution

The fourth proportional to 20,665.91, 28,518.36 and 11,714.24 is: 16,165.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,665.91 : 28,518.36 = 11,714.24 : x
  2. Step 2: Convert to fraction form
    20,665.91/28,518.36 = 11,714.24/x
  3. Step 3: Cross multiply
    20,665.91x = 28,518.36 × 11,714.24
  4. Step 4: Simplify right side
    20,665.91x = 334,070,913.45
  5. Step 5: Solve for x
    x = 334,070,913.45/20,665.91
  6. Step 6: Final answer
    x = 16,165.31

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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.