Home / 28,228.89-42,343.36-7,170.51

Finding the Fourth Proportional to 28,228.89, 42,343.36 and 7,170.51

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Solution

The fourth proportional to 28,228.89, 42,343.36 and 7,170.51 is: 10,755.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,228.89 : 42,343.36 = 7,170.51 : x
  2. Step 2: Convert to fraction form
    28,228.89/42,343.36 = 7,170.51/x
  3. Step 3: Cross multiply
    28,228.89x = 42,343.36 × 7,170.51
  4. Step 4: Simplify right side
    28,228.89x = 303,623,486.31
  5. Step 5: Solve for x
    x = 303,623,486.31/28,228.89
  6. Step 6: Final answer
    x = 10,755.77

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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.