Home / 31,586.20-47,379.08-12,861.84

Finding the Fourth Proportional to 31,586.20, 47,379.08 and 12,861.84

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Solution

The fourth proportional to 31,586.20, 47,379.08 and 12,861.84 is: 19,292.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,586.20 : 47,379.08 = 12,861.84 : x
  2. Step 2: Convert to fraction form
    31,586.20/47,379.08 = 12,861.84/x
  3. Step 3: Cross multiply
    31,586.20x = 47,379.08 × 12,861.84
  4. Step 4: Simplify right side
    31,586.20x = 609,382,017.28
  5. Step 5: Solve for x
    x = 609,382,017.28/31,586.20
  6. Step 6: Final answer
    x = 19,292.66

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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.