Home / 15,556.32-21,478.77-9,589.86

Finding the Fourth Proportional to 15,556.32, 21,478.77 and 9,589.86

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Solution

The fourth proportional to 15,556.32, 21,478.77 and 9,589.86 is: 13,240.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,556.32 : 21,478.77 = 9,589.86 : x
  2. Step 2: Convert to fraction form
    15,556.32/21,478.77 = 9,589.86/x
  3. Step 3: Cross multiply
    15,556.32x = 21,478.77 × 9,589.86
  4. Step 4: Simplify right side
    15,556.32x = 205,978,397.27
  5. Step 5: Solve for x
    x = 205,978,397.27/15,556.32
  6. Step 6: Final answer
    x = 13,240.82

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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.