Home / 13,965.12-20,923.02-13,620.69

Finding the Fourth Proportional to 13,965.12, 20,923.02 and 13,620.69

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Solution

The fourth proportional to 13,965.12, 20,923.02 and 13,620.69 is: 20,406.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,965.12 : 20,923.02 = 13,620.69 : x
  2. Step 2: Convert to fraction form
    13,965.12/20,923.02 = 13,620.69/x
  3. Step 3: Cross multiply
    13,965.12x = 20,923.02 × 13,620.69
  4. Step 4: Simplify right side
    13,965.12x = 284,985,969.28
  5. Step 5: Solve for x
    x = 284,985,969.28/13,965.12
  6. Step 6: Final answer
    x = 20,406.98

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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.