Home / 18,825.18-28,232.01-7,140.06

Finding the Fourth Proportional to 18,825.18, 28,232.01 and 7,140.06

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Solution

The fourth proportional to 18,825.18, 28,232.01 and 7,140.06 is: 10,707.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,825.18 : 28,232.01 = 7,140.06 : x
  2. Step 2: Convert to fraction form
    18,825.18/28,232.01 = 7,140.06/x
  3. Step 3: Cross multiply
    18,825.18x = 28,232.01 × 7,140.06
  4. Step 4: Simplify right side
    18,825.18x = 201,578,245.32
  5. Step 5: Solve for x
    x = 201,578,245.32/18,825.18
  6. Step 6: Final answer
    x = 10,707.91

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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.