Home / 14,117.70-21,176.55-12,586.80

Finding the Fourth Proportional to 14,117.70, 21,176.55 and 12,586.80

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Solution

The fourth proportional to 14,117.70, 21,176.55 and 12,586.80 is: 18,880.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,117.70 : 21,176.55 = 12,586.80 : x
  2. Step 2: Convert to fraction form
    14,117.70/21,176.55 = 12,586.80/x
  3. Step 3: Cross multiply
    14,117.70x = 21,176.55 × 12,586.80
  4. Step 4: Simplify right side
    14,117.70x = 266,544,999.54
  5. Step 5: Solve for x
    x = 266,544,999.54/14,117.70
  6. Step 6: Final answer
    x = 18,880.20

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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.