Home / 13,133.88-18,132.12-9,106.56

Finding the Fourth Proportional to 13,133.88, 18,132.12 and 9,106.56

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Solution

The fourth proportional to 13,133.88, 18,132.12 and 9,106.56 is: 12,572.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,133.88 : 18,132.12 = 9,106.56 : x
  2. Step 2: Convert to fraction form
    13,133.88/18,132.12 = 9,106.56/x
  3. Step 3: Cross multiply
    13,133.88x = 18,132.12 × 9,106.56
  4. Step 4: Simplify right side
    13,133.88x = 165,121,238.71
  5. Step 5: Solve for x
    x = 165,121,238.71/13,133.88
  6. Step 6: Final answer
    x = 12,572.16

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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.