Home / 28,286.55-42,429.89-9,561.58

Finding the Fourth Proportional to 28,286.55, 42,429.89 and 9,561.58

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Solution

The fourth proportional to 28,286.55, 42,429.89 and 9,561.58 is: 14,342.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,286.55 : 42,429.89 = 9,561.58 : x
  2. Step 2: Convert to fraction form
    28,286.55/42,429.89 = 9,561.58/x
  3. Step 3: Cross multiply
    28,286.55x = 42,429.89 × 9,561.58
  4. Step 4: Simplify right side
    28,286.55x = 405,696,705.46
  5. Step 5: Solve for x
    x = 405,696,705.46/28,286.55
  6. Step 6: Final answer
    x = 14,342.39

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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.