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Finding the Fourth Proportional to 28,606.64, 42,905.07 and 7,546.90

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Solution

The fourth proportional to 28,606.64, 42,905.07 and 7,546.90 is: 11,319.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,606.64 : 42,905.07 = 7,546.90 : x
  2. Step 2: Convert to fraction form
    28,606.64/42,905.07 = 7,546.90/x
  3. Step 3: Cross multiply
    28,606.64x = 42,905.07 × 7,546.90
  4. Step 4: Simplify right side
    28,606.64x = 323,800,307.70
  5. Step 5: Solve for x
    x = 323,800,307.70/28,606.64
  6. Step 6: Final answer
    x = 11,319.06

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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.