Home / 13,319.60-19,954.80-7,775.60

Finding the Fourth Proportional to 13,319.60, 19,954.80 and 7,775.60

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Solution

The fourth proportional to 13,319.60, 19,954.80 and 7,775.60 is: 11,649.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,319.60 : 19,954.80 = 7,775.60 : x
  2. Step 2: Convert to fraction form
    13,319.60/19,954.80 = 7,775.60/x
  3. Step 3: Cross multiply
    13,319.60x = 19,954.80 × 7,775.60
  4. Step 4: Simplify right side
    13,319.60x = 155,160,542.88
  5. Step 5: Solve for x
    x = 155,160,542.88/13,319.60
  6. Step 6: Final answer
    x = 11,649.04

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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.