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Finding the Fourth Proportional to 28,583.66, 42,864.96 and 9,858.90

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Solution

The fourth proportional to 28,583.66, 42,864.96 and 9,858.90 is: 14,784.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,583.66 : 42,864.96 = 9,858.90 : x
  2. Step 2: Convert to fraction form
    28,583.66/42,864.96 = 9,858.90/x
  3. Step 3: Cross multiply
    28,583.66x = 42,864.96 × 9,858.90
  4. Step 4: Simplify right side
    28,583.66x = 422,601,354.14
  5. Step 5: Solve for x
    x = 422,601,354.14/28,583.66
  6. Step 6: Final answer
    x = 14,784.72

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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.