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Finding the Fourth Proportional to 15,735.60, 23,610.60 and 7,412.40

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Solution

The fourth proportional to 15,735.60, 23,610.60 and 7,412.40 is: 11,121.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,735.60 : 23,610.60 = 7,412.40 : x
  2. Step 2: Convert to fraction form
    15,735.60/23,610.60 = 7,412.40/x
  3. Step 3: Cross multiply
    15,735.60x = 23,610.60 × 7,412.40
  4. Step 4: Simplify right side
    15,735.60x = 175,011,211.44
  5. Step 5: Solve for x
    x = 175,011,211.44/15,735.60
  6. Step 6: Final answer
    x = 11,121.99

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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.