Home / 14,900.10-20,529.69-11,121.75

Finding the Fourth Proportional to 14,900.10, 20,529.69 and 11,121.75

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Solution

The fourth proportional to 14,900.10, 20,529.69 and 11,121.75 is: 15,323.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,900.10 : 20,529.69 = 11,121.75 : x
  2. Step 2: Convert to fraction form
    14,900.10/20,529.69 = 11,121.75/x
  3. Step 3: Cross multiply
    14,900.10x = 20,529.69 × 11,121.75
  4. Step 4: Simplify right side
    14,900.10x = 228,326,038.05
  5. Step 5: Solve for x
    x = 228,326,038.05/14,900.10
  6. Step 6: Final answer
    x = 15,323.80

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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.