Home / 20,748.80-28,633.02-11,317.16

Finding the Fourth Proportional to 20,748.80, 28,633.02 and 11,317.16

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Solution

The fourth proportional to 20,748.80, 28,633.02 and 11,317.16 is: 15,617.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,748.80 : 28,633.02 = 11,317.16 : x
  2. Step 2: Convert to fraction form
    20,748.80/28,633.02 = 11,317.16/x
  3. Step 3: Cross multiply
    20,748.80x = 28,633.02 × 11,317.16
  4. Step 4: Simplify right side
    20,748.80x = 324,044,468.62
  5. Step 5: Solve for x
    x = 324,044,468.62/20,748.80
  6. Step 6: Final answer
    x = 15,617.50

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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.