Home / 10,133.39-15,187.75-7,172.69

Finding the Fourth Proportional to 10,133.39, 15,187.75 and 7,172.69

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Solution

The fourth proportional to 10,133.39, 15,187.75 and 7,172.69 is: 10,750.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,133.39 : 15,187.75 = 7,172.69 : x
  2. Step 2: Convert to fraction form
    10,133.39/15,187.75 = 7,172.69/x
  3. Step 3: Cross multiply
    10,133.39x = 15,187.75 × 7,172.69
  4. Step 4: Simplify right side
    10,133.39x = 108,936,969.02
  5. Step 5: Solve for x
    x = 108,936,969.02/10,133.39
  6. Step 6: Final answer
    x = 10,750.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.