Home / 15,523.47-21,421.71-8,449.74

Finding the Fourth Proportional to 15,523.47, 21,421.71 and 8,449.74

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Solution

The fourth proportional to 15,523.47, 21,421.71 and 8,449.74 is: 11,660.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,523.47 : 21,421.71 = 8,449.74 : x
  2. Step 2: Convert to fraction form
    15,523.47/21,421.71 = 8,449.74/x
  3. Step 3: Cross multiply
    15,523.47x = 21,421.71 × 8,449.74
  4. Step 4: Simplify right side
    15,523.47x = 181,007,879.86
  5. Step 5: Solve for x
    x = 181,007,879.86/15,523.47
  6. Step 6: Final answer
    x = 11,660.27

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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.