Home / 20,774.80-28,666.59-11,822.46

Finding the Fourth Proportional to 20,774.80, 28,666.59 and 11,822.46

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Solution

The fourth proportional to 20,774.80, 28,666.59 and 11,822.46 is: 16,313.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,774.80 : 28,666.59 = 11,822.46 : x
  2. Step 2: Convert to fraction form
    20,774.80/28,666.59 = 11,822.46/x
  3. Step 3: Cross multiply
    20,774.80x = 28,666.59 × 11,822.46
  4. Step 4: Simplify right side
    20,774.80x = 338,909,528.28
  5. Step 5: Solve for x
    x = 338,909,528.28/20,774.80
  6. Step 6: Final answer
    x = 16,313.50

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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.