Home / 17,688.40-26,532.60-7,817.20

Finding the Fourth Proportional to 17,688.40, 26,532.60 and 7,817.20

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Solution

The fourth proportional to 17,688.40, 26,532.60 and 7,817.20 is: 11,725.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,688.40 : 26,532.60 = 7,817.20 : x
  2. Step 2: Convert to fraction form
    17,688.40/26,532.60 = 7,817.20/x
  3. Step 3: Cross multiply
    17,688.40x = 26,532.60 × 7,817.20
  4. Step 4: Simplify right side
    17,688.40x = 207,410,640.72
  5. Step 5: Solve for x
    x = 207,410,640.72/17,688.40
  6. Step 6: Final answer
    x = 11,725.80

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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.