Home / 20,710.32-28,579.32-11,757.68

Finding the Fourth Proportional to 20,710.32, 28,579.32 and 11,757.68

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Solution

The fourth proportional to 20,710.32, 28,579.32 and 11,757.68 is: 16,225.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,710.32 : 28,579.32 = 11,757.68 : x
  2. Step 2: Convert to fraction form
    20,710.32/28,579.32 = 11,757.68/x
  3. Step 3: Cross multiply
    20,710.32x = 28,579.32 × 11,757.68
  4. Step 4: Simplify right side
    20,710.32x = 336,026,499.18
  5. Step 5: Solve for x
    x = 336,026,499.18/20,710.32
  6. Step 6: Final answer
    x = 16,225.08

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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.