Home / 15,529.20-21,434.67-13,998.30

Finding the Fourth Proportional to 15,529.20, 21,434.67 and 13,998.30

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Solution

The fourth proportional to 15,529.20, 21,434.67 and 13,998.30 is: 19,321.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,529.20 : 21,434.67 = 13,998.30 : x
  2. Step 2: Convert to fraction form
    15,529.20/21,434.67 = 13,998.30/x
  3. Step 3: Cross multiply
    15,529.20x = 21,434.67 × 13,998.30
  4. Step 4: Simplify right side
    15,529.20x = 300,048,941.06
  5. Step 5: Solve for x
    x = 300,048,941.06/15,529.20
  6. Step 6: Final answer
    x = 19,321.60

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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.