Home / 20,551.78-28,359.39-11,598.76

Finding the Fourth Proportional to 20,551.78, 28,359.39 and 11,598.76

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Solution

The fourth proportional to 20,551.78, 28,359.39 and 11,598.76 is: 16,005.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,551.78 : 28,359.39 = 11,598.76 : x
  2. Step 2: Convert to fraction form
    20,551.78/28,359.39 = 11,598.76/x
  3. Step 3: Cross multiply
    20,551.78x = 28,359.39 × 11,598.76
  4. Step 4: Simplify right side
    20,551.78x = 328,933,758.36
  5. Step 5: Solve for x
    x = 328,933,758.36/20,551.78
  6. Step 6: Final answer
    x = 16,005.12

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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.