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Finding the Fourth Proportional to 28,599.12, 42,899.00 and 7,542.20

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Solution

The fourth proportional to 28,599.12, 42,899.00 and 7,542.20 is: 11,313.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,599.12 : 42,899.00 = 7,542.20 : x
  2. Step 2: Convert to fraction form
    28,599.12/42,899.00 = 7,542.20/x
  3. Step 3: Cross multiply
    28,599.12x = 42,899.00 × 7,542.20
  4. Step 4: Simplify right side
    28,599.12x = 323,552,907.34
  5. Step 5: Solve for x
    x = 323,552,907.34/28,599.12
  6. Step 6: Final answer
    x = 11,313.39

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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.