Home / 26,663.36-39,996-13,478.72

Finding the Fourth Proportional to 26,663.36, 39,996 and 13,478.72

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Solution

The fourth proportional to 26,663.36, 39,996 and 13,478.72 is: 20,218.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,663.36 : 39,996 = 13,478.72 : x
  2. Step 2: Convert to fraction form
    26,663.36/39,996 = 13,478.72/x
  3. Step 3: Cross multiply
    26,663.36x = 39,996 × 13,478.72
  4. Step 4: Simplify right side
    26,663.36x = 539,094,885.12
  5. Step 5: Solve for x
    x = 539,094,885.12/26,663.36
  6. Step 6: Final answer
    x = 20,218.57

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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.