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Finding the Fourth Proportional to 28,281.53, 42,404.86 and 9,559.80

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Solution

The fourth proportional to 28,281.53, 42,404.86 and 9,559.80 is: 14,333.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,281.53 : 42,404.86 = 9,559.80 : x
  2. Step 2: Convert to fraction form
    28,281.53/42,404.86 = 9,559.80/x
  3. Step 3: Cross multiply
    28,281.53x = 42,404.86 × 9,559.80
  4. Step 4: Simplify right side
    28,281.53x = 405,381,980.63
  5. Step 5: Solve for x
    x = 405,381,980.63/28,281.53
  6. Step 6: Final answer
    x = 14,333.81

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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.