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Finding the Fourth Proportional to 17,810.40, 26,715.60 and 14,991.60

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Solution

The fourth proportional to 17,810.40, 26,715.60 and 14,991.60 is: 22,487.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,810.40 : 26,715.60 = 14,991.60 : x
  2. Step 2: Convert to fraction form
    17,810.40/26,715.60 = 14,991.60/x
  3. Step 3: Cross multiply
    17,810.40x = 26,715.60 × 14,991.60
  4. Step 4: Simplify right side
    17,810.40x = 400,509,588.96
  5. Step 5: Solve for x
    x = 400,509,588.96/17,810.40
  6. Step 6: Final answer
    x = 22,487.40

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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.