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Finding the Fourth Proportional to 28,985.86, 43,460.07 and 9,257.86

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Solution

The fourth proportional to 28,985.86, 43,460.07 and 9,257.86 is: 13,880.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,985.86 : 43,460.07 = 9,257.86 : x
  2. Step 2: Convert to fraction form
    28,985.86/43,460.07 = 9,257.86/x
  3. Step 3: Cross multiply
    28,985.86x = 43,460.07 × 9,257.86
  4. Step 4: Simplify right side
    28,985.86x = 402,347,243.65
  5. Step 5: Solve for x
    x = 402,347,243.65/28,985.86
  6. Step 6: Final answer
    x = 13,880.81

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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.