Home / 13,860.77-20,792.88-5,426.18

Finding the Fourth Proportional to 13,860.77, 20,792.88 and 5,426.18

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Solution

The fourth proportional to 13,860.77, 20,792.88 and 5,426.18 is: 8,139.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,860.77 : 20,792.88 = 5,426.18 : x
  2. Step 2: Convert to fraction form
    13,860.77/20,792.88 = 5,426.18/x
  3. Step 3: Cross multiply
    13,860.77x = 20,792.88 × 5,426.18
  4. Step 4: Simplify right side
    13,860.77x = 112,825,943.99
  5. Step 5: Solve for x
    x = 112,825,943.99/13,860.77
  6. Step 6: Final answer
    x = 8,139.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.