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Finding the Fourth Proportional to 28,986.86, 43,461.57 and 9,258.86

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Solution

The fourth proportional to 28,986.86, 43,461.57 and 9,258.86 is: 13,882.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,986.86 : 43,461.57 = 9,258.86 : x
  2. Step 2: Convert to fraction form
    28,986.86/43,461.57 = 9,258.86/x
  3. Step 3: Cross multiply
    28,986.86x = 43,461.57 × 9,258.86
  4. Step 4: Simplify right side
    28,986.86x = 402,404,592.01
  5. Step 5: Solve for x
    x = 402,404,592.01/28,986.86
  6. Step 6: Final answer
    x = 13,882.31

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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.