Home / 28,228.45-42,342.69-7,170.07

Finding the Fourth Proportional to 28,228.45, 42,342.69 and 7,170.07

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Solution

The fourth proportional to 28,228.45, 42,342.69 and 7,170.07 is: 10,755.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,228.45 : 42,342.69 = 7,170.07 : x
  2. Step 2: Convert to fraction form
    28,228.45/42,342.69 = 7,170.07/x
  3. Step 3: Cross multiply
    28,228.45x = 42,342.69 × 7,170.07
  4. Step 4: Simplify right side
    28,228.45x = 303,600,051.29
  5. Step 5: Solve for x
    x = 303,600,051.29/28,228.45
  6. Step 6: Final answer
    x = 10,755.11

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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.