Home / 13,559.05-20,348.70-6,981.85

Finding the Fourth Proportional to 13,559.05, 20,348.70 and 6,981.85

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Solution

The fourth proportional to 13,559.05, 20,348.70 and 6,981.85 is: 10,477.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,559.05 : 20,348.70 = 6,981.85 : x
  2. Step 2: Convert to fraction form
    13,559.05/20,348.70 = 6,981.85/x
  3. Step 3: Cross multiply
    13,559.05x = 20,348.70 × 6,981.85
  4. Step 4: Simplify right side
    13,559.05x = 142,071,571.10
  5. Step 5: Solve for x
    x = 142,071,571.10/13,559.05
  6. Step 6: Final answer
    x = 10,477.99

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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.