Home / 13,386.99-18,474.03-8,080.77

Finding the Fourth Proportional to 13,386.99, 18,474.03 and 8,080.77

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Solution

The fourth proportional to 13,386.99, 18,474.03 and 8,080.77 is: 11,151.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,386.99 : 18,474.03 = 8,080.77 : x
  2. Step 2: Convert to fraction form
    13,386.99/18,474.03 = 8,080.77/x
  3. Step 3: Cross multiply
    13,386.99x = 18,474.03 × 8,080.77
  4. Step 4: Simplify right side
    13,386.99x = 149,284,387.40
  5. Step 5: Solve for x
    x = 149,284,387.40/13,386.99
  6. Step 6: Final answer
    x = 11,151.45

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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.