Home / 20,666.86-28,522.02-11,716

Finding the Fourth Proportional to 20,666.86, 28,522.02 and 11,716

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Solution

The fourth proportional to 20,666.86, 28,522.02 and 11,716 is: 16,169.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,666.86 : 28,522.02 = 11,716 : x
  2. Step 2: Convert to fraction form
    20,666.86/28,522.02 = 11,716/x
  3. Step 3: Cross multiply
    20,666.86x = 28,522.02 × 11,716
  4. Step 4: Simplify right side
    20,666.86x = 334,163,986.32
  5. Step 5: Solve for x
    x = 334,163,986.32/20,666.86
  6. Step 6: Final answer
    x = 16,169.07

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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.