Home / 13,120.43-18,106.29-7,152.08

Finding the Fourth Proportional to 13,120.43, 18,106.29 and 7,152.08

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Solution

The fourth proportional to 13,120.43, 18,106.29 and 7,152.08 is: 9,869.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,120.43 : 18,106.29 = 7,152.08 : x
  2. Step 2: Convert to fraction form
    13,120.43/18,106.29 = 7,152.08/x
  3. Step 3: Cross multiply
    13,120.43x = 18,106.29 × 7,152.08
  4. Step 4: Simplify right side
    13,120.43x = 129,497,634.58
  5. Step 5: Solve for x
    x = 129,497,634.58/13,120.43
  6. Step 6: Final answer
    x = 9,869.92

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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.