Home / 13,089.45-18,063.48-7,121.12

Finding the Fourth Proportional to 13,089.45, 18,063.48 and 7,121.12

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Solution

The fourth proportional to 13,089.45, 18,063.48 and 7,121.12 is: 9,827.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,089.45 : 18,063.48 = 7,121.12 : x
  2. Step 2: Convert to fraction form
    13,089.45/18,063.48 = 7,121.12/x
  3. Step 3: Cross multiply
    13,089.45x = 18,063.48 × 7,121.12
  4. Step 4: Simplify right side
    13,089.45x = 128,632,125.06
  5. Step 5: Solve for x
    x = 128,632,125.06/13,089.45
  6. Step 6: Final answer
    x = 9,827.16

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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.