Home / 13,121.01-18,106.75-7,152.73

Finding the Fourth Proportional to 13,121.01, 18,106.75 and 7,152.73

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Solution

The fourth proportional to 13,121.01, 18,106.75 and 7,152.73 is: 9,870.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,121.01 : 18,106.75 = 7,152.73 : x
  2. Step 2: Convert to fraction form
    13,121.01/18,106.75 = 7,152.73/x
  3. Step 3: Cross multiply
    13,121.01x = 18,106.75 × 7,152.73
  4. Step 4: Simplify right side
    13,121.01x = 129,512,693.93
  5. Step 5: Solve for x
    x = 129,512,693.93/13,121.01
  6. Step 6: Final answer
    x = 9,870.63

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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.