Home / 15,617.86-21,553.18-8,904.48

Finding the Fourth Proportional to 15,617.86, 21,553.18 and 8,904.48

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Solution

The fourth proportional to 15,617.86, 21,553.18 and 8,904.48 is: 12,288.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,617.86 : 21,553.18 = 8,904.48 : x
  2. Step 2: Convert to fraction form
    15,617.86/21,553.18 = 8,904.48/x
  3. Step 3: Cross multiply
    15,617.86x = 21,553.18 × 8,904.48
  4. Step 4: Simplify right side
    15,617.86x = 191,919,860.25
  5. Step 5: Solve for x
    x = 191,919,860.25/15,617.86
  6. Step 6: Final answer
    x = 12,288.49

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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.