Home / 14,631.86-20,189.84-8,663.78

Finding the Fourth Proportional to 14,631.86, 20,189.84 and 8,663.78

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Solution

The fourth proportional to 14,631.86, 20,189.84 and 8,663.78 is: 11,954.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,631.86 : 20,189.84 = 8,663.78 : x
  2. Step 2: Convert to fraction form
    14,631.86/20,189.84 = 8,663.78/x
  3. Step 3: Cross multiply
    14,631.86x = 20,189.84 × 8,663.78
  4. Step 4: Simplify right side
    14,631.86x = 174,920,332.00
  5. Step 5: Solve for x
    x = 174,920,332.00/14,631.86
  6. Step 6: Final answer
    x = 11,954.76

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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.