Home / 13,212.60-19,818.90-12,337.80

Finding the Fourth Proportional to 13,212.60, 19,818.90 and 12,337.80

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Solution

The fourth proportional to 13,212.60, 19,818.90 and 12,337.80 is: 18,506.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,212.60 : 19,818.90 = 12,337.80 : x
  2. Step 2: Convert to fraction form
    13,212.60/19,818.90 = 12,337.80/x
  3. Step 3: Cross multiply
    13,212.60x = 19,818.90 × 12,337.80
  4. Step 4: Simplify right side
    13,212.60x = 244,521,624.42
  5. Step 5: Solve for x
    x = 244,521,624.42/13,212.60
  6. Step 6: Final answer
    x = 18,506.70

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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.