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Finding the Fourth Proportional to 16,881.50, 25,313.60 and 8,988.50

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Solution

The fourth proportional to 16,881.50, 25,313.60 and 8,988.50 is: 13,478.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,881.50 : 25,313.60 = 8,988.50 : x
  2. Step 2: Convert to fraction form
    16,881.50/25,313.60 = 8,988.50/x
  3. Step 3: Cross multiply
    16,881.50x = 25,313.60 × 8,988.50
  4. Step 4: Simplify right side
    16,881.50x = 227,531,189.50
  5. Step 5: Solve for x
    x = 227,531,189.50/16,881.50
  6. Step 6: Final answer
    x = 13,478.14

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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.