Home / 18,331.86-25,261.66-13,011.78

Finding the Fourth Proportional to 18,331.86, 25,261.66 and 13,011.78

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Solution

The fourth proportional to 18,331.86, 25,261.66 and 13,011.78 is: 17,930.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,331.86 : 25,261.66 = 13,011.78 : x
  2. Step 2: Convert to fraction form
    18,331.86/25,261.66 = 13,011.78/x
  3. Step 3: Cross multiply
    18,331.86x = 25,261.66 × 13,011.78
  4. Step 4: Simplify right side
    18,331.86x = 328,699,162.35
  5. Step 5: Solve for x
    x = 328,699,162.35/18,331.86
  6. Step 6: Final answer
    x = 17,930.49

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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.