Home / 20,401.41-28,155.96-11,448.95

Finding the Fourth Proportional to 20,401.41, 28,155.96 and 11,448.95

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Solution

The fourth proportional to 20,401.41, 28,155.96 and 11,448.95 is: 15,800.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,401.41 : 28,155.96 = 11,448.95 : x
  2. Step 2: Convert to fraction form
    20,401.41/28,155.96 = 11,448.95/x
  3. Step 3: Cross multiply
    20,401.41x = 28,155.96 × 11,448.95
  4. Step 4: Simplify right side
    20,401.41x = 322,356,037.46
  5. Step 5: Solve for x
    x = 322,356,037.46/20,401.41
  6. Step 6: Final answer
    x = 15,800.68

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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.