Home / 38,415.08-53,010.60-21,418.76

Finding the Fourth Proportional to 38,415.08, 53,010.60 and 21,418.76

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Solution

The fourth proportional to 38,415.08, 53,010.60 and 21,418.76 is: 29,556.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,415.08 : 53,010.60 = 21,418.76 : x
  2. Step 2: Convert to fraction form
    38,415.08/53,010.60 = 21,418.76/x
  3. Step 3: Cross multiply
    38,415.08x = 53,010.60 × 21,418.76
  4. Step 4: Simplify right side
    38,415.08x = 1,135,421,318.86
  5. Step 5: Solve for x
    x = 1,135,421,318.86/38,415.08
  6. Step 6: Final answer
    x = 29,556.66

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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.