Home / 20,950.48-28,910.70-11,519.02

Finding the Fourth Proportional to 20,950.48, 28,910.70 and 11,519.02

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Solution

The fourth proportional to 20,950.48, 28,910.70 and 11,519.02 is: 15,895.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,950.48 : 28,910.70 = 11,519.02 : x
  2. Step 2: Convert to fraction form
    20,950.48/28,910.70 = 11,519.02/x
  3. Step 3: Cross multiply
    20,950.48x = 28,910.70 × 11,519.02
  4. Step 4: Simplify right side
    20,950.48x = 333,022,931.51
  5. Step 5: Solve for x
    x = 333,022,931.51/20,950.48
  6. Step 6: Final answer
    x = 15,895.72

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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.