Home / 13,688.20-20,529.06-6,288.04

Finding the Fourth Proportional to 13,688.20, 20,529.06 and 6,288.04

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Solution

The fourth proportional to 13,688.20, 20,529.06 and 6,288.04 is: 9,430.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,688.20 : 20,529.06 = 6,288.04 : x
  2. Step 2: Convert to fraction form
    13,688.20/20,529.06 = 6,288.04/x
  3. Step 3: Cross multiply
    13,688.20x = 20,529.06 × 6,288.04
  4. Step 4: Simplify right side
    13,688.20x = 129,087,550.44
  5. Step 5: Solve for x
    x = 129,087,550.44/13,688.20
  6. Step 6: Final answer
    x = 9,430.57

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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.