Home / 21,017.56-31,526.26-6,978.64

Finding the Fourth Proportional to 21,017.56, 31,526.26 and 6,978.64

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Solution

The fourth proportional to 21,017.56, 31,526.26 and 6,978.64 is: 10,467.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,017.56 : 31,526.26 = 6,978.64 : x
  2. Step 2: Convert to fraction form
    21,017.56/31,526.26 = 6,978.64/x
  3. Step 3: Cross multiply
    21,017.56x = 31,526.26 × 6,978.64
  4. Step 4: Simplify right side
    21,017.56x = 220,010,419.09
  5. Step 5: Solve for x
    x = 220,010,419.09/21,017.56
  6. Step 6: Final answer
    x = 10,467.93

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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.