Home / 13,703.36-20,555.05-3,315.11

Finding the Fourth Proportional to 13,703.36, 20,555.05 and 3,315.11

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Solution

The fourth proportional to 13,703.36, 20,555.05 and 3,315.11 is: 4,972.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,703.36 : 20,555.05 = 3,315.11 : x
  2. Step 2: Convert to fraction form
    13,703.36/20,555.05 = 3,315.11/x
  3. Step 3: Cross multiply
    13,703.36x = 20,555.05 × 3,315.11
  4. Step 4: Simplify right side
    13,703.36x = 68,142,140.74
  5. Step 5: Solve for x
    x = 68,142,140.74/13,703.36
  6. Step 6: Final answer
    x = 4,972.66

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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.