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Finding the Fourth Proportional to 28,603.96, 42,899.08 and 9,884.64

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Solution

The fourth proportional to 28,603.96, 42,899.08 and 9,884.64 is: 14,824.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,603.96 : 42,899.08 = 9,884.64 : x
  2. Step 2: Convert to fraction form
    28,603.96/42,899.08 = 9,884.64/x
  3. Step 3: Cross multiply
    28,603.96x = 42,899.08 × 9,884.64
  4. Step 4: Simplify right side
    28,603.96x = 424,041,962.13
  5. Step 5: Solve for x
    x = 424,041,962.13/28,603.96
  6. Step 6: Final answer
    x = 14,824.59

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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.