Home / 20,666.16-28,518.72-11,714.52

Finding the Fourth Proportional to 20,666.16, 28,518.72 and 11,714.52

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Solution

The fourth proportional to 20,666.16, 28,518.72 and 11,714.52 is: 16,165.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,666.16 : 28,518.72 = 11,714.52 : x
  2. Step 2: Convert to fraction form
    20,666.16/28,518.72 = 11,714.52/x
  3. Step 3: Cross multiply
    20,666.16x = 28,518.72 × 11,714.52
  4. Step 4: Simplify right side
    20,666.16x = 334,083,115.81
  5. Step 5: Solve for x
    x = 334,083,115.81/20,666.16
  6. Step 6: Final answer
    x = 16,165.71

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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.