Home / 20,448.58-28,210.65-12,892.49

Finding the Fourth Proportional to 20,448.58, 28,210.65 and 12,892.49

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Solution

The fourth proportional to 20,448.58, 28,210.65 and 12,892.49 is: 17,786.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,448.58 : 28,210.65 = 12,892.49 : x
  2. Step 2: Convert to fraction form
    20,448.58/28,210.65 = 12,892.49/x
  3. Step 3: Cross multiply
    20,448.58x = 28,210.65 × 12,892.49
  4. Step 4: Simplify right side
    20,448.58x = 363,705,523.02
  5. Step 5: Solve for x
    x = 363,705,523.02/20,448.58
  6. Step 6: Final answer
    x = 17,786.35

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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.