Home / 15,453.50-21,314.94-14,939.11

Finding the Fourth Proportional to 15,453.50, 21,314.94 and 14,939.11

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Solution

The fourth proportional to 15,453.50, 21,314.94 and 14,939.11 is: 20,605.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,453.50 : 21,314.94 = 14,939.11 : x
  2. Step 2: Convert to fraction form
    15,453.50/21,314.94 = 14,939.11/x
  3. Step 3: Cross multiply
    15,453.50x = 21,314.94 × 14,939.11
  4. Step 4: Simplify right side
    15,453.50x = 318,426,233.30
  5. Step 5: Solve for x
    x = 318,426,233.30/15,453.50
  6. Step 6: Final answer
    x = 20,605.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.