Home / 20,994.96-28,944-15,016.20

Finding the Fourth Proportional to 20,994.96, 28,944 and 15,016.20

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Solution

The fourth proportional to 20,994.96, 28,944 and 15,016.20 is: 20,701.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,994.96 : 28,944 = 15,016.20 : x
  2. Step 2: Convert to fraction form
    20,994.96/28,944 = 15,016.20/x
  3. Step 3: Cross multiply
    20,994.96x = 28,944 × 15,016.20
  4. Step 4: Simplify right side
    20,994.96x = 434,628,892.80
  5. Step 5: Solve for x
    x = 434,628,892.80/20,994.96
  6. Step 6: Final answer
    x = 20,701.58

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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.