Home / 16,918.64-25,385.90-7,557.78

Finding the Fourth Proportional to 16,918.64, 25,385.90 and 7,557.78

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Solution

The fourth proportional to 16,918.64, 25,385.90 and 7,557.78 is: 11,340.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,918.64 : 25,385.90 = 7,557.78 : x
  2. Step 2: Convert to fraction form
    16,918.64/25,385.90 = 7,557.78/x
  3. Step 3: Cross multiply
    16,918.64x = 25,385.90 × 7,557.78
  4. Step 4: Simplify right side
    16,918.64x = 191,861,009.51
  5. Step 5: Solve for x
    x = 191,861,009.51/16,918.64
  6. Step 6: Final answer
    x = 11,340.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.