Home / 20,297.91-28,011.62-11,346.90

Finding the Fourth Proportional to 20,297.91, 28,011.62 and 11,346.90

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Solution

The fourth proportional to 20,297.91, 28,011.62 and 11,346.90 is: 15,659.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,297.91 : 28,011.62 = 11,346.90 : x
  2. Step 2: Convert to fraction form
    20,297.91/28,011.62 = 11,346.90/x
  3. Step 3: Cross multiply
    20,297.91x = 28,011.62 × 11,346.90
  4. Step 4: Simplify right side
    20,297.91x = 317,844,994.24
  5. Step 5: Solve for x
    x = 317,844,994.24/20,297.91
  6. Step 6: Final answer
    x = 15,659.00

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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.