Home / 17,918.09-26,877.20-5,438.21

Finding the Fourth Proportional to 17,918.09, 26,877.20 and 5,438.21

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Solution

The fourth proportional to 17,918.09, 26,877.20 and 5,438.21 is: 8,157.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,918.09 : 26,877.20 = 5,438.21 : x
  2. Step 2: Convert to fraction form
    17,918.09/26,877.20 = 5,438.21/x
  3. Step 3: Cross multiply
    17,918.09x = 26,877.20 × 5,438.21
  4. Step 4: Simplify right side
    17,918.09x = 146,163,897.81
  5. Step 5: Solve for x
    x = 146,163,897.81/17,918.09
  6. Step 6: Final answer
    x = 8,157.34

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1.5x scale

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.