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Finding the Fourth Proportional to 28,599.54, 42,900.22 and 9,880.65

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Solution

The fourth proportional to 28,599.54, 42,900.22 and 9,880.65 is: 14,821.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,599.54 : 42,900.22 = 9,880.65 : x
  2. Step 2: Convert to fraction form
    28,599.54/42,900.22 = 9,880.65/x
  3. Step 3: Cross multiply
    28,599.54x = 42,900.22 × 9,880.65
  4. Step 4: Simplify right side
    28,599.54x = 423,881,794.84
  5. Step 5: Solve for x
    x = 423,881,794.84/28,599.54
  6. Step 6: Final answer
    x = 14,821.28

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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.