Home / 13,688.36-20,532.53-3,300.11

Finding the Fourth Proportional to 13,688.36, 20,532.53 and 3,300.11

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Solution

The fourth proportional to 13,688.36, 20,532.53 and 3,300.11 is: 4,950.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,688.36 : 20,532.53 = 3,300.11 : x
  2. Step 2: Convert to fraction form
    13,688.36/20,532.53 = 3,300.11/x
  3. Step 3: Cross multiply
    13,688.36x = 20,532.53 × 3,300.11
  4. Step 4: Simplify right side
    13,688.36x = 67,759,591.08
  5. Step 5: Solve for x
    x = 67,759,591.08/13,688.36
  6. Step 6: Final answer
    x = 4,950.16

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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.