Home / 14,577.76-20,120.64-8,530.78

Finding the Fourth Proportional to 14,577.76, 20,120.64 and 8,530.78

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Solution

The fourth proportional to 14,577.76, 20,120.64 and 8,530.78 is: 11,774.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,577.76 : 20,120.64 = 8,530.78 : x
  2. Step 2: Convert to fraction form
    14,577.76/20,120.64 = 8,530.78/x
  3. Step 3: Cross multiply
    14,577.76x = 20,120.64 × 8,530.78
  4. Step 4: Simplify right side
    14,577.76x = 171,644,753.30
  5. Step 5: Solve for x
    x = 171,644,753.30/14,577.76
  6. Step 6: Final answer
    x = 11,774.43

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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.