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Finding the Fourth Proportional to 18,280.49, 27,430.98 and 9,961.08

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Solution

The fourth proportional to 18,280.49, 27,430.98 and 9,961.08 is: 14,947.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,280.49 : 27,430.98 = 9,961.08 : x
  2. Step 2: Convert to fraction form
    18,280.49/27,430.98 = 9,961.08/x
  3. Step 3: Cross multiply
    18,280.49x = 27,430.98 × 9,961.08
  4. Step 4: Simplify right side
    18,280.49x = 273,242,136.45
  5. Step 5: Solve for x
    x = 273,242,136.45/18,280.49
  6. Step 6: Final answer
    x = 14,947.20

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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.