Home / 28,399.68-42,599.50-9,670.06

Finding the Fourth Proportional to 28,399.68, 42,599.50 and 9,670.06

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Solution

The fourth proportional to 28,399.68, 42,599.50 and 9,670.06 is: 14,505.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,399.68 : 42,599.50 = 9,670.06 : x
  2. Step 2: Convert to fraction form
    28,399.68/42,599.50 = 9,670.06/x
  3. Step 3: Cross multiply
    28,399.68x = 42,599.50 × 9,670.06
  4. Step 4: Simplify right side
    28,399.68x = 411,939,720.97
  5. Step 5: Solve for x
    x = 411,939,720.97/28,399.68
  6. Step 6: Final answer
    x = 14,505.08

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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.