Home / 13,089.74-18,063.42-7,121.25

Finding the Fourth Proportional to 13,089.74, 18,063.42 and 7,121.25

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Solution

The fourth proportional to 13,089.74, 18,063.42 and 7,121.25 is: 9,827.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,089.74 : 18,063.42 = 7,121.25 : x
  2. Step 2: Convert to fraction form
    13,089.74/18,063.42 = 7,121.25/x
  3. Step 3: Cross multiply
    13,089.74x = 18,063.42 × 7,121.25
  4. Step 4: Simplify right side
    13,089.74x = 128,634,129.68
  5. Step 5: Solve for x
    x = 128,634,129.68/13,089.74
  6. Step 6: Final answer
    x = 9,827.10

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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.