Home / 26,655.86-39,921.60-21,071.72

Finding the Fourth Proportional to 26,655.86, 39,921.60 and 21,071.72

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Solution

The fourth proportional to 26,655.86, 39,921.60 and 21,071.72 is: 31,558.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,655.86 : 39,921.60 = 21,071.72 : x
  2. Step 2: Convert to fraction form
    26,655.86/39,921.60 = 21,071.72/x
  3. Step 3: Cross multiply
    26,655.86x = 39,921.60 × 21,071.72
  4. Step 4: Simplify right side
    26,655.86x = 841,216,777.15
  5. Step 5: Solve for x
    x = 841,216,777.15/26,655.86
  6. Step 6: Final answer
    x = 31,558.42

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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.