Home / 14,123.89-21,185.70-8,578.77

Finding the Fourth Proportional to 14,123.89, 21,185.70 and 8,578.77

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Solution

The fourth proportional to 14,123.89, 21,185.70 and 8,578.77 is: 12,868.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,123.89 : 21,185.70 = 8,578.77 : x
  2. Step 2: Convert to fraction form
    14,123.89/21,185.70 = 8,578.77/x
  3. Step 3: Cross multiply
    14,123.89x = 21,185.70 × 8,578.77
  4. Step 4: Simplify right side
    14,123.89x = 181,747,247.59
  5. Step 5: Solve for x
    x = 181,747,247.59/14,123.89
  6. Step 6: Final answer
    x = 12,868.07

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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.