Home / 18,825.12-28,220.22-7,130.52

Finding the Fourth Proportional to 18,825.12, 28,220.22 and 7,130.52

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Solution

The fourth proportional to 18,825.12, 28,220.22 and 7,130.52 is: 10,689.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,825.12 : 28,220.22 = 7,130.52 : x
  2. Step 2: Convert to fraction form
    18,825.12/28,220.22 = 7,130.52/x
  3. Step 3: Cross multiply
    18,825.12x = 28,220.22 × 7,130.52
  4. Step 4: Simplify right side
    18,825.12x = 201,224,843.11
  5. Step 5: Solve for x
    x = 201,224,843.11/18,825.12
  6. Step 6: Final answer
    x = 10,689.17

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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.