Home / 20,464.17-28,237.45-11,513.87

Finding the Fourth Proportional to 20,464.17, 28,237.45 and 11,513.87

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Solution

The fourth proportional to 20,464.17, 28,237.45 and 11,513.87 is: 15,887.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,464.17 : 28,237.45 = 11,513.87 : x
  2. Step 2: Convert to fraction form
    20,464.17/28,237.45 = 11,513.87/x
  3. Step 3: Cross multiply
    20,464.17x = 28,237.45 × 11,513.87
  4. Step 4: Simplify right side
    20,464.17x = 325,122,270.86
  5. Step 5: Solve for x
    x = 325,122,270.86/20,464.17
  6. Step 6: Final answer
    x = 15,887.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.