Home / 28,665.45-42,984.14-11,795.40

Finding the Fourth Proportional to 28,665.45, 42,984.14 and 11,795.40

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Solution

The fourth proportional to 28,665.45, 42,984.14 and 11,795.40 is: 17,687.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,665.45 : 42,984.14 = 11,795.40 : x
  2. Step 2: Convert to fraction form
    28,665.45/42,984.14 = 11,795.40/x
  3. Step 3: Cross multiply
    28,665.45x = 42,984.14 × 11,795.40
  4. Step 4: Simplify right side
    28,665.45x = 507,015,065.98
  5. Step 5: Solve for x
    x = 507,015,065.98/28,665.45
  6. Step 6: Final answer
    x = 17,687.32

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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.