Home / 20,459.04-28,233.06-11,384.20

Finding the Fourth Proportional to 20,459.04, 28,233.06 and 11,384.20

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Solution

The fourth proportional to 20,459.04, 28,233.06 and 11,384.20 is: 15,709.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,459.04 : 28,233.06 = 11,384.20 : x
  2. Step 2: Convert to fraction form
    20,459.04/28,233.06 = 11,384.20/x
  3. Step 3: Cross multiply
    20,459.04x = 28,233.06 × 11,384.20
  4. Step 4: Simplify right side
    20,459.04x = 321,410,801.65
  5. Step 5: Solve for x
    x = 321,410,801.65/20,459.04
  6. Step 6: Final answer
    x = 15,709.96

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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.