Home / 20,358.84-28,082.78-13,459.98

Finding the Fourth Proportional to 20,358.84, 28,082.78 and 13,459.98

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Solution

The fourth proportional to 20,358.84, 28,082.78 and 13,459.98 is: 18,566.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,358.84 : 28,082.78 = 13,459.98 : x
  2. Step 2: Convert to fraction form
    20,358.84/28,082.78 = 13,459.98/x
  3. Step 3: Cross multiply
    20,358.84x = 28,082.78 × 13,459.98
  4. Step 4: Simplify right side
    20,358.84x = 377,993,657.14
  5. Step 5: Solve for x
    x = 377,993,657.14/20,358.84
  6. Step 6: Final answer
    x = 18,566.56

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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.