Home / 13,359.61-20,036.67-8,438.86

Finding the Fourth Proportional to 13,359.61, 20,036.67 and 8,438.86

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Solution

The fourth proportional to 13,359.61, 20,036.67 and 8,438.86 is: 12,656.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,359.61 : 20,036.67 = 8,438.86 : x
  2. Step 2: Convert to fraction form
    13,359.61/20,036.67 = 8,438.86/x
  3. Step 3: Cross multiply
    13,359.61x = 20,036.67 × 8,438.86
  4. Step 4: Simplify right side
    13,359.61x = 169,086,653.00
  5. Step 5: Solve for x
    x = 169,086,653.00/13,359.61
  6. Step 6: Final answer
    x = 12,656.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.