Home / 15,720.54-23,575.80-5,188.60

Finding the Fourth Proportional to 15,720.54, 23,575.80 and 5,188.60

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Solution

The fourth proportional to 15,720.54, 23,575.80 and 5,188.60 is: 7,781.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,720.54 : 23,575.80 = 5,188.60 : x
  2. Step 2: Convert to fraction form
    15,720.54/23,575.80 = 5,188.60/x
  3. Step 3: Cross multiply
    15,720.54x = 23,575.80 × 5,188.60
  4. Step 4: Simplify right side
    15,720.54x = 122,325,395.88
  5. Step 5: Solve for x
    x = 122,325,395.88/15,720.54
  6. Step 6: Final answer
    x = 7,781.25

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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.