Home / 15,396.79-21,247.55-8,323.21

Finding the Fourth Proportional to 15,396.79, 21,247.55 and 8,323.21

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Solution

The fourth proportional to 15,396.79, 21,247.55 and 8,323.21 is: 11,486.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,396.79 : 21,247.55 = 8,323.21 : x
  2. Step 2: Convert to fraction form
    15,396.79/21,247.55 = 8,323.21/x
  3. Step 3: Cross multiply
    15,396.79x = 21,247.55 × 8,323.21
  4. Step 4: Simplify right side
    15,396.79x = 176,847,820.64
  5. Step 5: Solve for x
    x = 176,847,820.64/15,396.79
  6. Step 6: Final answer
    x = 11,486.02

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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.