Home / 19,321.20-28,987.20-9,460.80

Finding the Fourth Proportional to 19,321.20, 28,987.20 and 9,460.80

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Solution

The fourth proportional to 19,321.20, 28,987.20 and 9,460.80 is: 14,193.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,321.20 : 28,987.20 = 9,460.80 : x
  2. Step 2: Convert to fraction form
    19,321.20/28,987.20 = 9,460.80/x
  3. Step 3: Cross multiply
    19,321.20x = 28,987.20 × 9,460.80
  4. Step 4: Simplify right side
    19,321.20x = 274,242,101.76
  5. Step 5: Solve for x
    x = 274,242,101.76/19,321.20
  6. Step 6: Final answer
    x = 14,193.84

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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.