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Finding the Fourth Proportional to 17,087.80, 25,607.70 and 13,583.80

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Solution

The fourth proportional to 17,087.80, 25,607.70 and 13,583.80 is: 20,356.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,087.80 : 25,607.70 = 13,583.80 : x
  2. Step 2: Convert to fraction form
    17,087.80/25,607.70 = 13,583.80/x
  3. Step 3: Cross multiply
    17,087.80x = 25,607.70 × 13,583.80
  4. Step 4: Simplify right side
    17,087.80x = 347,849,875.26
  5. Step 5: Solve for x
    x = 347,849,875.26/17,087.80
  6. Step 6: Final answer
    x = 20,356.62

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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.