Home / 13,080.99-18,032.70-9,931.71

Finding the Fourth Proportional to 13,080.99, 18,032.70 and 9,931.71

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Solution

The fourth proportional to 13,080.99, 18,032.70 and 9,931.71 is: 13,691.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,080.99 : 18,032.70 = 9,931.71 : x
  2. Step 2: Convert to fraction form
    13,080.99/18,032.70 = 9,931.71/x
  3. Step 3: Cross multiply
    13,080.99x = 18,032.70 × 9,931.71
  4. Step 4: Simplify right side
    13,080.99x = 179,095,546.92
  5. Step 5: Solve for x
    x = 179,095,546.92/13,080.99
  6. Step 6: Final answer
    x = 13,691.28

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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.