Home / 20,406.99-28,154.41-13,337.51

Finding the Fourth Proportional to 20,406.99, 28,154.41 and 13,337.51

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Solution

The fourth proportional to 20,406.99, 28,154.41 and 13,337.51 is: 18,401.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,406.99 : 28,154.41 = 13,337.51 : x
  2. Step 2: Convert to fraction form
    20,406.99/28,154.41 = 13,337.51/x
  3. Step 3: Cross multiply
    20,406.99x = 28,154.41 × 13,337.51
  4. Step 4: Simplify right side
    20,406.99x = 375,509,724.92
  5. Step 5: Solve for x
    x = 375,509,724.92/20,406.99
  6. Step 6: Final answer
    x = 18,401.03

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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.