Home / 20,301.64-28,004.58-11,916.52

Finding the Fourth Proportional to 20,301.64, 28,004.58 and 11,916.52

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Solution

The fourth proportional to 20,301.64, 28,004.58 and 11,916.52 is: 16,437.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,301.64 : 28,004.58 = 11,916.52 : x
  2. Step 2: Convert to fraction form
    20,301.64/28,004.58 = 11,916.52/x
  3. Step 3: Cross multiply
    20,301.64x = 28,004.58 × 11,916.52
  4. Step 4: Simplify right side
    20,301.64x = 333,717,137.66
  5. Step 5: Solve for x
    x = 333,717,137.66/20,301.64
  6. Step 6: Final answer
    x = 16,437.94

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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.