Home / 15,522.48-21,421.44-8,449.20

Finding the Fourth Proportional to 15,522.48, 21,421.44 and 8,449.20

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Solution

The fourth proportional to 15,522.48, 21,421.44 and 8,449.20 is: 11,660.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,522.48 : 21,421.44 = 8,449.20 : x
  2. Step 2: Convert to fraction form
    15,522.48/21,421.44 = 8,449.20/x
  3. Step 3: Cross multiply
    15,522.48x = 21,421.44 × 8,449.20
  4. Step 4: Simplify right side
    15,522.48x = 180,994,030.85
  5. Step 5: Solve for x
    x = 180,994,030.85/15,522.48
  6. Step 6: Final answer
    x = 11,660.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.