Home / 13,288.99-18,333.11-8,507.76

Finding the Fourth Proportional to 13,288.99, 18,333.11 and 8,507.76

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Solution

The fourth proportional to 13,288.99, 18,333.11 and 8,507.76 is: 11,737.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,288.99 : 18,333.11 = 8,507.76 : x
  2. Step 2: Convert to fraction form
    13,288.99/18,333.11 = 8,507.76/x
  3. Step 3: Cross multiply
    13,288.99x = 18,333.11 × 8,507.76
  4. Step 4: Simplify right side
    13,288.99x = 155,973,699.93
  5. Step 5: Solve for x
    x = 155,973,699.93/13,288.99
  6. Step 6: Final answer
    x = 11,737.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.